Pub Date : 2023-06-26DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10231524
P. Parra-Rivas, S. Hetzel, Y. V. Kartashov, P. F. de Córdoba, J. A. Conejero, A. Aceves, C. Milián
The excitation of temporal cavity solitons in fiber and microring resonators has important implications into nonlinear science and technology such as the generation of frequency combs [1]. Temporal solitons are robust against strong perturbations coming from the so-called higher order effects. Particularly interesting are those coming from higher order chromatic dispersion, which have been shown to impact positively in soliton formation and in their stability [2], [3]. In this work we unveil the bifurcation structure and stability of bright and dark Kerr solitons in the presence of pure fourth order dispersion (FOD), in the normal and anomalous group velocity dispersion (GVD) regime [4]. Under a dominant FOD, the time evolution of the intracavity field envelop, A, may be described by the pure quartic Lugiato-Lefever equation.
{"title":"Bright and Dark Solitons in Pure Quartic Kerr Resonators","authors":"P. Parra-Rivas, S. Hetzel, Y. V. Kartashov, P. F. de Córdoba, J. A. Conejero, A. Aceves, C. Milián","doi":"10.1109/CLEO/Europe-EQEC57999.2023.10231524","DOIUrl":"https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10231524","url":null,"abstract":"The excitation of temporal cavity solitons in fiber and microring resonators has important implications into nonlinear science and technology such as the generation of frequency combs [1]. Temporal solitons are robust against strong perturbations coming from the so-called higher order effects. Particularly interesting are those coming from higher order chromatic dispersion, which have been shown to impact positively in soliton formation and in their stability [2], [3]. In this work we unveil the bifurcation structure and stability of bright and dark Kerr solitons in the presence of pure fourth order dispersion (FOD), in the normal and anomalous group velocity dispersion (GVD) regime [4]. Under a dominant FOD, the time evolution of the intracavity field envelop, A, may be described by the pure quartic Lugiato-Lefever equation.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"16 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74018307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/cleo/europe-eqec57999.2023.10232186
Attila P. Kovács, Máté Karnok, Tibor Gilinger, Miklós Füle, K. Osvay
Recent development of ultrafast lasers has resulted in kHz repetition rate laser systems [1], whose stability opens a way to applications of laser-generated secondary sources as soft X-rays, electrons, and particles. Nowadays the bottleneck of their scientific and industrial applications is the availability and reliability of target systems matching the repetition rate of the lasers. Hard x-ray generation and ion acceleration require high-density targets. One of the most favorable approaches has been the liquid jet sheet [2] with thicknesses of a few $mu mathrm{m}$. Recent studies have shown, however, that interaction of femtosecond pulses with few tens of nm thick solid targets may result in higher cut-off energy as well as proton yield [3]. The so far developed characterization methods are suitable for measurement of liquid jets in vacuum down to a $mu mathrm{m}$ level [4], [5], while industrial solutions with nm resolution works with 10 mm working distance and in air only.
{"title":"Characterisation of a 200 nm Thick Liquid Jet Sheet for Ion Acceleration","authors":"Attila P. Kovács, Máté Karnok, Tibor Gilinger, Miklós Füle, K. Osvay","doi":"10.1109/cleo/europe-eqec57999.2023.10232186","DOIUrl":"https://doi.org/10.1109/cleo/europe-eqec57999.2023.10232186","url":null,"abstract":"Recent development of ultrafast lasers has resulted in kHz repetition rate laser systems [1], whose stability opens a way to applications of laser-generated secondary sources as soft X-rays, electrons, and particles. Nowadays the bottleneck of their scientific and industrial applications is the availability and reliability of target systems matching the repetition rate of the lasers. Hard x-ray generation and ion acceleration require high-density targets. One of the most favorable approaches has been the liquid jet sheet [2] with thicknesses of a few $mu mathrm{m}$. Recent studies have shown, however, that interaction of femtosecond pulses with few tens of nm thick solid targets may result in higher cut-off energy as well as proton yield [3]. The so far developed characterization methods are suitable for measurement of liquid jets in vacuum down to a $mu mathrm{m}$ level [4], [5], while industrial solutions with nm resolution works with 10 mm working distance and in air only.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"51 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75145170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/cleo/europe-eqec57999.2023.10231398
B. Connelly, Patrick J. Taylor, George J. de Coster
Topological insulators (TIs) such as Bi2Se3 host topological surface states [1], where spin-momentum locking engenders a helicity-dependent photoresponse [2], [3] and crystal symmetries are encoded in nonlinear optical (NLO) responses under strong optical stimulation [4]. A perfect Bi2Se3 crystal obeys the point group $D_{3mathrm{d}}$, generated by threefold rotational symmetry about the z-axis $C_{3}$, inversion symmetry $i$, and mirror reflection the x-axis $sigma_{hat{chi}}$. However, direct and indirect measurements of helical photocurrents in Bi3Se3 thin films have until now only displayed weak to no threefold symmetry due to the presence of twinned domains that impart an effective sixfold symmetry. We report on new low-twinning thin film growth that realizes for the first time the emergence of clear threefold symmetries in the azimuthal dependence of topological photocurrents, which are attributed to a measurable photon drag effect (PDE) by NLO analysis of intrinsic crystal symmetries.
{"title":"Illuminating Hidden Symmetries in Topological Insulator Thin Films","authors":"B. Connelly, Patrick J. Taylor, George J. de Coster","doi":"10.1109/cleo/europe-eqec57999.2023.10231398","DOIUrl":"https://doi.org/10.1109/cleo/europe-eqec57999.2023.10231398","url":null,"abstract":"Topological insulators (TIs) such as Bi2Se3 host topological surface states [1], where spin-momentum locking engenders a helicity-dependent photoresponse [2], [3] and crystal symmetries are encoded in nonlinear optical (NLO) responses under strong optical stimulation [4]. A perfect Bi2Se3 crystal obeys the point group $D_{3mathrm{d}}$, generated by threefold rotational symmetry about the z-axis $C_{3}$, inversion symmetry $i$, and mirror reflection the x-axis $sigma_{hat{chi}}$. However, direct and indirect measurements of helical photocurrents in Bi3Se3 thin films have until now only displayed weak to no threefold symmetry due to the presence of twinned domains that impart an effective sixfold symmetry. We report on new low-twinning thin film growth that realizes for the first time the emergence of clear threefold symmetries in the azimuthal dependence of topological photocurrents, which are attributed to a measurable photon drag effect (PDE) by NLO analysis of intrinsic crystal symmetries.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"91 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75276996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232297
Marijn Rikers, Ayesheh Bashiri, Angela Barreda Gomez, M. Steinert, Duk-Yong Choi, T. Pertsch, I. Staude
The fabrication process, as shown in schematic Fig. 1A, includes spin-coating of a mixture of electron beam resist (ma-N2401) with 0.1 mass percentage of the fluorescent europium complex (Eu(TTFA)3) with a final thickness of ~80 nm. Then the film is exposed using electron beam lithography and developed. Crucially, this process gives precise control over the shape and size of the resulting fluorescent structures with a resolution of approx. 100 nm. Eu(TTFA)3 is a metal-organic coordination complex that has a well-established emission process. Specifically, the TTFA ligands absorb UV light $(lambda=375 text{nm})$ and through energy transfer the central $text{Eu}^{3+}$ ions ${}^{text{5}}text{Do}$ manifold is populated and photons are emitted in a decay transition to ${}^{7}mathrm{F}_{mathrm{j}} {mathrm{j}=0$, 1, 2,3,4,5,6 $}. {}^{5}mathrm{D}_{0}rightarrow {}^{7}mathrm{F}_{1}$ and ${}^{5}mathrm{D}_{0}rightarrow {}^{7}mathrm{F}_{2}$ are magnetic dipole and electric dipole transitions, respectively [3]. This transition remains present after the fabrication process, for doses between 100 $mu mathrm{C}cdot text{cm}^{-2}$ and 500 $mu mathrm{C} cdot text{cm}^{-2}$, as shown in Fig. 1B.
{"title":"Deterministic Fabrication of Fluorescent Nanostructures Exhibiting Magnetic dipolar Transitions","authors":"Marijn Rikers, Ayesheh Bashiri, Angela Barreda Gomez, M. Steinert, Duk-Yong Choi, T. Pertsch, I. Staude","doi":"10.1109/CLEO/Europe-EQEC57999.2023.10232297","DOIUrl":"https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10232297","url":null,"abstract":"The fabrication process, as shown in schematic Fig. 1A, includes spin-coating of a mixture of electron beam resist (ma-N2401) with 0.1 mass percentage of the fluorescent europium complex (Eu(TTFA)3) with a final thickness of ~80 nm. Then the film is exposed using electron beam lithography and developed. Crucially, this process gives precise control over the shape and size of the resulting fluorescent structures with a resolution of approx. 100 nm. Eu(TTFA)3 is a metal-organic coordination complex that has a well-established emission process. Specifically, the TTFA ligands absorb UV light $(lambda=375 text{nm})$ and through energy transfer the central $text{Eu}^{3+}$ ions ${}^{text{5}}text{Do}$ manifold is populated and photons are emitted in a decay transition to ${}^{7}mathrm{F}_{mathrm{j}} {mathrm{j}=0$, 1, 2,3,4,5,6 $}. {}^{5}mathrm{D}_{0}rightarrow {}^{7}mathrm{F}_{1}$ and ${}^{5}mathrm{D}_{0}rightarrow {}^{7}mathrm{F}_{2}$ are magnetic dipole and electric dipole transitions, respectively [3]. This transition remains present after the fabrication process, for doses between 100 $mu mathrm{C}cdot text{cm}^{-2}$ and 500 $mu mathrm{C} cdot text{cm}^{-2}$, as shown in Fig. 1B.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"51 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75278986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/cleo/europe-eqec57999.2023.10231604
Ayman N. Kamel, Marcus R. A. Newman, A. Marchevsky, R. Christiansen, Ali N. Babar, P. Kristensen, Ole Sigmund, Søren Stobbe, J. Mørk, K. Yvind
Optical interconnects using low-capacitance optoelectronic devices are providing a way forward for the energy-sustainable growth in information technology [1]. For single-die electronic circuits, the co-integration of photonic interconnects faces challenges combining multiple materials, and the typical large size of lasers and detectors.
{"title":"All-Silicon Topology Optimized Two-Photon Absorption Detector for On-Chip Interconnects","authors":"Ayman N. Kamel, Marcus R. A. Newman, A. Marchevsky, R. Christiansen, Ali N. Babar, P. Kristensen, Ole Sigmund, Søren Stobbe, J. Mørk, K. Yvind","doi":"10.1109/cleo/europe-eqec57999.2023.10231604","DOIUrl":"https://doi.org/10.1109/cleo/europe-eqec57999.2023.10231604","url":null,"abstract":"Optical interconnects using low-capacitance optoelectronic devices are providing a way forward for the energy-sustainable growth in information technology [1]. For single-die electronic circuits, the co-integration of photonic interconnects faces challenges combining multiple materials, and the typical large size of lasers and detectors.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"50 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75745455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/cleo/europe-eqec57999.2023.10231826
Yury Kosevich, J. Ordonez-Miranda, M. Nomura, Sebastian Volz
Bilayer graphene (BLG) is a stack of two single-layer graphene sheets and it has unique electronic and optical properties that make it suitable for studying surface plasmon-polaritons (SPPs). In bilayer graphene, the SPPs can be excited at the interface between the bilayer graphene and a dielectric material. The excitation of SPPs in bilayer graphene is different from that in a metal, as it is based on the coupling of light to the oscillations of the charge carriers in the graphene, rather than to the oscillations of free electrons in a metal. The unique electronic properties of bilayer graphene allow for the engineering of the SPP dispersion relation, providing a way to tailor the SPP wavevector, frequency, and confinement.
{"title":"Long-Range Surface Plasmon-Polaritons in Bilayer Graphene as Efficient Thermal Energy Carries","authors":"Yury Kosevich, J. Ordonez-Miranda, M. Nomura, Sebastian Volz","doi":"10.1109/cleo/europe-eqec57999.2023.10231826","DOIUrl":"https://doi.org/10.1109/cleo/europe-eqec57999.2023.10231826","url":null,"abstract":"Bilayer graphene (BLG) is a stack of two single-layer graphene sheets and it has unique electronic and optical properties that make it suitable for studying surface plasmon-polaritons (SPPs). In bilayer graphene, the SPPs can be excited at the interface between the bilayer graphene and a dielectric material. The excitation of SPPs in bilayer graphene is different from that in a metal, as it is based on the coupling of light to the oscillations of the charge carriers in the graphene, rather than to the oscillations of free electrons in a metal. The unique electronic properties of bilayer graphene allow for the engineering of the SPP dispersion relation, providing a way to tailor the SPP wavevector, frequency, and confinement.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"33 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74499621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232167
Andong Wang, Patrick Salter, D. Grojo, Martin Booth
3D fabrication of semiconductor devices is important for numerous advanced applications from integrated microelectronics/photonics to micro-electro-mechanical systems (MEMS). Direct laser writing creates a promising alternative to lithographic methods which can require tedious steps. This relies on the possibility to penetrate inside the materials with ultrashort laser pulses in the infrared region of the spectrum to precisely induce micro/nano-scale structures. However, recent research [1]–[3] shows severe difficulties specific to semiconductors. The narrow bandgaps and large nonlinear refractive indices cause strong limitations on the achievable focusing conditions, which in conjunction with important nonlinear propagation effects prevents the high space-time energy localization required for precise and controllable fabrications [3]. Accordingly, there is a strong motivation to monitor and optimize the applied laser conditions inside semiconductors to achieve high-quality 3D fabrication.
{"title":"Ultra-High Space-Time Localization of Laser Energy for 3D Fabrication Inside Semiconductors","authors":"Andong Wang, Patrick Salter, D. Grojo, Martin Booth","doi":"10.1109/CLEO/Europe-EQEC57999.2023.10232167","DOIUrl":"https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10232167","url":null,"abstract":"3D fabrication of semiconductor devices is important for numerous advanced applications from integrated microelectronics/photonics to micro-electro-mechanical systems (MEMS). Direct laser writing creates a promising alternative to lithographic methods which can require tedious steps. This relies on the possibility to penetrate inside the materials with ultrashort laser pulses in the infrared region of the spectrum to precisely induce micro/nano-scale structures. However, recent research [1]–[3] shows severe difficulties specific to semiconductors. The narrow bandgaps and large nonlinear refractive indices cause strong limitations on the achievable focusing conditions, which in conjunction with important nonlinear propagation effects prevents the high space-time energy localization required for precise and controllable fabrications [3]. Accordingly, there is a strong motivation to monitor and optimize the applied laser conditions inside semiconductors to achieve high-quality 3D fabrication.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"19 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74870447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232437
L. Oxenløwe
That an optical comb-source can be used as a multi-carrier source for data transmission is an almost 20 year old notion, first carried out with fibre-based supercontinuum sources to carry on-off-keying (OOK) modulated data [1]. This technique was expanded to support more than 100 WDM channels [2]. Fibre-based comb sources were optimised to enable coherent transmission over 75 nm [3] with 1520 individual comb lines from one source. Very spectrally-efficient data formats could also be supported [4–5], essentially proving that combs are perfectly compatible with the most advanced communication systems, and even used for investigations of extremely high data rates in the Pbit/s domain [6–7]. Planar optical ring resonators (ORRs) are compact integrated comb sources, which have potential to make practical integrated transmitters including the comb source, and were first suggested and demonstrated in 2009 [8–9]. Soon after came the first demonstrations that these types of combs could also carry OOK data [10], and later that they could indeed also support coherent data formats [11] and to very high data rates [12]. Integrated combs based on ORRs generally suffer from low comb-line power, and new structures were developed to increase the conversion efficiency, such as soliton crystals [13] and dark Kerr combs [14], and demonstrations were made to show that such combs could also support long-haul links [15]. We wanted to investigate the impact of the limited comb-line power on the data-carrying capacity, and found that hundreds of terabit/s could be supported by a supercontinuum-based chip-scale comb source [16], and recently made a rigorous analysis showing that integrated comb sources can support tens of petabit/s [17], and that these sources may prove very energy-efficient. In this presentation, I will also present results on reach implications using integrated combs.
{"title":"Optical Combs for High-Capacity Transmission and Energy-Optimization of Long-Haul Fiber Cables","authors":"L. Oxenløwe","doi":"10.1109/CLEO/Europe-EQEC57999.2023.10232437","DOIUrl":"https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10232437","url":null,"abstract":"That an optical comb-source can be used as a multi-carrier source for data transmission is an almost 20 year old notion, first carried out with fibre-based supercontinuum sources to carry on-off-keying (OOK) modulated data [1]. This technique was expanded to support more than 100 WDM channels [2]. Fibre-based comb sources were optimised to enable coherent transmission over 75 nm [3] with 1520 individual comb lines from one source. Very spectrally-efficient data formats could also be supported [4–5], essentially proving that combs are perfectly compatible with the most advanced communication systems, and even used for investigations of extremely high data rates in the Pbit/s domain [6–7]. Planar optical ring resonators (ORRs) are compact integrated comb sources, which have potential to make practical integrated transmitters including the comb source, and were first suggested and demonstrated in 2009 [8–9]. Soon after came the first demonstrations that these types of combs could also carry OOK data [10], and later that they could indeed also support coherent data formats [11] and to very high data rates [12]. Integrated combs based on ORRs generally suffer from low comb-line power, and new structures were developed to increase the conversion efficiency, such as soliton crystals [13] and dark Kerr combs [14], and demonstrations were made to show that such combs could also support long-haul links [15]. We wanted to investigate the impact of the limited comb-line power on the data-carrying capacity, and found that hundreds of terabit/s could be supported by a supercontinuum-based chip-scale comb source [16], and recently made a rigorous analysis showing that integrated comb sources can support tens of petabit/s [17], and that these sources may prove very energy-efficient. In this presentation, I will also present results on reach implications using integrated combs.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"1 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74884112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The constructive/destructive quantum interference due to coherent interaction between multi-level atoms generates electromagnetic induced absorption/transparency (EIA/EIT) [1]. EIT has a transparent spectral window in the absorption spectra, and EIA has a narrow absorption window in the transmission spectra. EIA/EIT has been demonstrated in atomic systems [2], [3], and analogue filter responses have also been demonstrated using stimulated Brillouin scattering [4], [5]. In this paper, we present a method to generate switchable EIA/EIT-like RF filters using Brillouin-induced loss tailoring. Flexible filter shaping enables highly versatile responses with tunable bandwidths and central frequencies which can have applications in wireless signal processing and RADARs.
{"title":"Switchable Analogue of Electromagnetic Induced Absorption and Transmission-Like Filter Responses Using Stimulated Brillouin Scattering","authors":"Mukund Jha, Reena Parihar, Rajveer Dhawan, Amol Choudhary","doi":"10.1109/CLEO/Europe-EQEC57999.2023.10231765","DOIUrl":"https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10231765","url":null,"abstract":"The constructive/destructive quantum interference due to coherent interaction between multi-level atoms generates electromagnetic induced absorption/transparency (EIA/EIT) [1]. EIT has a transparent spectral window in the absorption spectra, and EIA has a narrow absorption window in the transmission spectra. EIA/EIT has been demonstrated in atomic systems [2], [3], and analogue filter responses have also been demonstrated using stimulated Brillouin scattering [4], [5]. In this paper, we present a method to generate switchable EIA/EIT-like RF filters using Brillouin-induced loss tailoring. Flexible filter shaping enables highly versatile responses with tunable bandwidths and central frequencies which can have applications in wireless signal processing and RADARs.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"52 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74895910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232609
Sarah Scheuer, A. Munk, M. Strotkamp, B. Jungbluth, J. Höffner, J. Froh, T. Mense, A. Mauer
For atmospheric research, temperature distribution, wind and aerosols in the middle atmosphere from 10 km to 100 km are of particular interest because of scarce data and unresolved discrepancies between measurements and simulations. One approach to gain such data is the use of Doppler-Mie (aerosols), -Rayleigh (air molecules) and -resonance lidar systems for the different altitudes in a single general purpose lidar system [1]. For Doppler resonance fluorescence, metal resonance lines of, e. g., potassium (770 nm) and iron (386 nm) are addressed. The Doppler-broadened and -shifted metal resonance line is scanned, which requires a linewidth of the laser below 30 MHz and consequently a laser in single longitudinal mode (SLM) operation.
{"title":"Diode-pumped Q-switched Alexandrite Laser as an emitter in a compact general purpose lidar system for atmospheric measurements","authors":"Sarah Scheuer, A. Munk, M. Strotkamp, B. Jungbluth, J. Höffner, J. Froh, T. Mense, A. Mauer","doi":"10.1109/CLEO/Europe-EQEC57999.2023.10232609","DOIUrl":"https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10232609","url":null,"abstract":"For atmospheric research, temperature distribution, wind and aerosols in the middle atmosphere from 10 km to 100 km are of particular interest because of scarce data and unresolved discrepancies between measurements and simulations. One approach to gain such data is the use of Doppler-Mie (aerosols), -Rayleigh (air molecules) and -resonance lidar systems for the different altitudes in a single general purpose lidar system [1]. For Doppler resonance fluorescence, metal resonance lines of, e. g., potassium (770 nm) and iron (386 nm) are addressed. The Doppler-broadened and -shifted metal resonance line is scanned, which requires a linewidth of the laser below 30 MHz and consequently a laser in single longitudinal mode (SLM) operation.","PeriodicalId":19477,"journal":{"name":"Oceans","volume":"7 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72940890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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