Pub Date : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8872694
M. Sorokina, S. Turitsyn
We demonstrate an advantage of combining probabilistic shaping and neuromorphic computing processing based on the fiber-optic echo state network analogue (FESNA) for optical communications systems.
{"title":"Signal Shaping and Neuromorphic Processing for Optical Communications","authors":"M. Sorokina, S. Turitsyn","doi":"10.1109/CLEOE-EQEC.2019.8872694","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872694","url":null,"abstract":"We demonstrate an advantage of combining probabilistic shaping and neuromorphic computing processing based on the fiber-optic echo state network analogue (FESNA) for optical communications systems.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"9 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75509103","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 : 2019-10-17DOI: 10.1109/cleoe-eqec.2019.8872345
A. Pryamikov, G. Alagashev, S. Turitsyn
The negative curvature hollow core fibres (NCHCFs) [1–3] have attracted recently a great deal of attention because of their potential for many practical applications ranging from optical communications to high power lasers and power delivery. In the NCHCFs light is strongly localized in the air core due to the mode field interaction with the limited portions of the core-cladding boundary. In our work [4] we observed that the light leakage from the hollow core in NCHCFs has features which indicate the formation of phase dislocations and optical vortices in the cladding elements. Here we demonstrate that there are lines in the cladding capillary walls along which the imaginary and real parts of the transverse components of the core mode electric field Ex and Ey are equal to zero and can cross each other (the zero — amplitude lines). The direction of the transverse component of the core mode electric field is uncertain in the vicinity of these lines. Such behaviour of the core mode fields and its polarization indicates the presence of optical vortices in the cladding capillary wall [5].
{"title":"Phase Dislocations in the Negative Curvature Hollow Core Fibres","authors":"A. Pryamikov, G. Alagashev, S. Turitsyn","doi":"10.1109/cleoe-eqec.2019.8872345","DOIUrl":"https://doi.org/10.1109/cleoe-eqec.2019.8872345","url":null,"abstract":"The negative curvature hollow core fibres (NCHCFs) [1–3] have attracted recently a great deal of attention because of their potential for many practical applications ranging from optical communications to high power lasers and power delivery. In the NCHCFs light is strongly localized in the air core due to the mode field interaction with the limited portions of the core-cladding boundary. In our work [4] we observed that the light leakage from the hollow core in NCHCFs has features which indicate the formation of phase dislocations and optical vortices in the cladding elements. Here we demonstrate that there are lines in the cladding capillary walls along which the imaginary and real parts of the transverse components of the core mode electric field Ex and Ey are equal to zero and can cross each other (the zero — amplitude lines). The direction of the transverse component of the core mode electric field is uncertain in the vicinity of these lines. Such behaviour of the core mode fields and its polarization indicates the presence of optical vortices in the cladding capillary wall [5].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"67 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75739784","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 : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8871762
S. Rajabali, G. Scalari, J. Keller, M. Beck, J. Faist
Ultrastrong coupling (USC) regime has been an intriguing research topic in cavity quantum electrodynamics (QED) experiments due to its capability to modify the ground and the excited states of a coupled system[1–3]. We investigate the USC of Landau level (LL) transitions in a two dimensional electron gas to teraherz (THz) metasurfaces using THz time domain spectroscopy. Complementary THz split ring resonator (cSRR) arrays are used as metasurfaces]. A higher coupling rate can be achieved by reducing the capacitive gap of the resonator due to the increased vacuum field fluctuations. However, our results indicate that this reduction introduces an inhomogenous broadening of the upper polariton branch below a threshold gap width.
{"title":"Inhomogeneous Broadening of a Polaritonic Mode in the Ultrastrong Coupling Regime","authors":"S. Rajabali, G. Scalari, J. Keller, M. Beck, J. Faist","doi":"10.1109/CLEOE-EQEC.2019.8871762","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871762","url":null,"abstract":"Ultrastrong coupling (USC) regime has been an intriguing research topic in cavity quantum electrodynamics (QED) experiments due to its capability to modify the ground and the excited states of a coupled system[1–3]. We investigate the USC of Landau level (LL) transitions in a two dimensional electron gas to teraherz (THz) metasurfaces using THz time domain spectroscopy. Complementary THz split ring resonator (cSRR) arrays are used as metasurfaces]. A higher coupling rate can be achieved by reducing the capacitive gap of the resonator due to the increased vacuum field fluctuations. However, our results indicate that this reduction introduces an inhomogenous broadening of the upper polariton branch below a threshold gap width.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"70 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82558352","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 : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8872720
Florian Schepers, Tim Bexter, T. Hellwig, C. Fallnich
The excitation of transverse laser modes, can be achieved by a cavity-internal amplitude or phase modulation of the laser light. For this purpose typically additional cavity-internal components are applied, which can result in increased losses and a limited resonator internal power [1]. Therefore, gain shaping based methods [2], where the selective mode excitation is achieved via a cavity-external modulation of the pump beam are of great interest, as they require no modification of the laser cavity itself. However, the so far presented gain shaping methods are strongly limited with respect to the number of modes that can be excited, as they apply pump beams of a fixed spatial shape. Here, we present a spatial gain shaping method that applies a digital micromirror device (DMD) as a shaping tool for the pump beam, enabling a high degree of freedom for the gain distributions that can be generated. We demonstrate the advantage of our approach by exciting nearly 1000 different single Hermite-Gaussian (HG) modes in an end-pumped Nd:YVO4 laser, increasing the number of excitable HG modes by at least a factor of five in comparison to other excitation methods [2, 3].
{"title":"DMD-Based Excitation of Transverse Laser Modes by Spatial Pump Beam Shaping","authors":"Florian Schepers, Tim Bexter, T. Hellwig, C. Fallnich","doi":"10.1109/CLEOE-EQEC.2019.8872720","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872720","url":null,"abstract":"The excitation of transverse laser modes, can be achieved by a cavity-internal amplitude or phase modulation of the laser light. For this purpose typically additional cavity-internal components are applied, which can result in increased losses and a limited resonator internal power [1]. Therefore, gain shaping based methods [2], where the selective mode excitation is achieved via a cavity-external modulation of the pump beam are of great interest, as they require no modification of the laser cavity itself. However, the so far presented gain shaping methods are strongly limited with respect to the number of modes that can be excited, as they apply pump beams of a fixed spatial shape. Here, we present a spatial gain shaping method that applies a digital micromirror device (DMD) as a shaping tool for the pump beam, enabling a high degree of freedom for the gain distributions that can be generated. We demonstrate the advantage of our approach by exciting nearly 1000 different single Hermite-Gaussian (HG) modes in an end-pumped Nd:YVO4 laser, increasing the number of excitable HG modes by at least a factor of five in comparison to other excitation methods [2, 3].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"97 6 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87702903","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 : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8871882
U. Senica, E. Mavrona, T. Olariu, A. Forrer, M. Beck, J. Faist, G. Scalari
Terahertz (THz) Quantum Cascade Lasers (QCLs) have been of large interest in the context of very broadband and compact frequency combs in the THz spectral range [1]. For THz QCLs, the double metal waveguide proved to be advantageous in terms of bandwidth, compactness and low dispersion. However, as it confines the optical mode to deeply subwavelength dimensions, the output beam is highly divergent, as displayed in Fig. 1(a). Previous solutions addressing this issue were either impractical or not so broadband [2,3]. To improve the far-field properties of the double metal waveguide across a very large frequency range, we designed, fabricated and characterized a broadband, narrow beam Vivaldi Antenna [4].
{"title":"A Broadband Polarization-Rotating Vivaldi Antenna for Beam Focusing of Terahertz Quantum Cascade Lasers","authors":"U. Senica, E. Mavrona, T. Olariu, A. Forrer, M. Beck, J. Faist, G. Scalari","doi":"10.1109/CLEOE-EQEC.2019.8871882","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871882","url":null,"abstract":"Terahertz (THz) Quantum Cascade Lasers (QCLs) have been of large interest in the context of very broadband and compact frequency combs in the THz spectral range [1]. For THz QCLs, the double metal waveguide proved to be advantageous in terms of bandwidth, compactness and low dispersion. However, as it confines the optical mode to deeply subwavelength dimensions, the output beam is highly divergent, as displayed in Fig. 1(a). Previous solutions addressing this issue were either impractical or not so broadband [2,3]. To improve the far-field properties of the double metal waveguide across a very large frequency range, we designed, fabricated and characterized a broadband, narrow beam Vivaldi Antenna [4].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"31 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86747661","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 : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8873289
F. Kapsalidis, M. Singleton, M. Beck, J. Faist
Quantum cascade lasers (QLCs) are semiconductor devices, which are the dominant light source in the mid-IR part of the electromagnetic spectrum [1], and have recently been demonstrated to operate as frequency combs [2]. Characteristics of the comb operation are a broad, phase-locked optical spectrum of equidistant modes, and a strong narrow radio frequency (RF) beatnote, that is generated from the beating of those modes. One unique property of the QCL is the short upper-state lifetime, which allows the coupling between the injected current and the beatnote at the roundtrip frequency.
{"title":"Low-Loss RF Cavity for Quantum Cascade Laser Frequency Combs","authors":"F. Kapsalidis, M. Singleton, M. Beck, J. Faist","doi":"10.1109/CLEOE-EQEC.2019.8873289","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873289","url":null,"abstract":"Quantum cascade lasers (QLCs) are semiconductor devices, which are the dominant light source in the mid-IR part of the electromagnetic spectrum [1], and have recently been demonstrated to operate as frequency combs [2]. Characteristics of the comb operation are a broad, phase-locked optical spectrum of equidistant modes, and a strong narrow radio frequency (RF) beatnote, that is generated from the beating of those modes. One unique property of the QCL is the short upper-state lifetime, which allows the coupling between the injected current and the beatnote at the roundtrip frequency.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"80 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89952399","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 : 2019-10-17DOI: 10.1109/cleoe-eqec.2019.8872663
Manuel Crespo-Ballesteros, Yong Yang, M. Sumetsky
The phenomenon of resonant tunnelling has attracted significant interest due to its intriguing underlying physics and multidisciplinary applications in the theory of nuclear reactions [1], electron propagation through semiconductor devices, quantum wire and quantum dot structures [2, 3], as well as propagation of light through optical microresonators [4–6]. The applications of resonant tunnelling phenomenon in microresonator photonics is of special interest. The simplest photonic device exhibiting resonant tunnelling behaviour consists of an optical microresonator and two semi-infinite waveguides separated from the microresonator by effective potential barriers, which can be fabricated inside the photonic crystals. In order to observe a similar type of resonant tunnelling in a whispering gallery mode microresonator, the latter should be evanescently coupled to two microfibers, i.e., present a four-port device [5, 6].
{"title":"Four-Port Resonant Tunnelling Bottle Microresonator Device","authors":"Manuel Crespo-Ballesteros, Yong Yang, M. Sumetsky","doi":"10.1109/cleoe-eqec.2019.8872663","DOIUrl":"https://doi.org/10.1109/cleoe-eqec.2019.8872663","url":null,"abstract":"The phenomenon of resonant tunnelling has attracted significant interest due to its intriguing underlying physics and multidisciplinary applications in the theory of nuclear reactions [1], electron propagation through semiconductor devices, quantum wire and quantum dot structures [2, 3], as well as propagation of light through optical microresonators [4–6]. The applications of resonant tunnelling phenomenon in microresonator photonics is of special interest. The simplest photonic device exhibiting resonant tunnelling behaviour consists of an optical microresonator and two semi-infinite waveguides separated from the microresonator by effective potential barriers, which can be fabricated inside the photonic crystals. In order to observe a similar type of resonant tunnelling in a whispering gallery mode microresonator, the latter should be evanescently coupled to two microfibers, i.e., present a four-port device [5, 6].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"3 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90953273","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 : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8871506
D. Morris, Michael E. Reilly, M. Esser
High-power and high-energy lasers at 2 μm are becoming increasingly important for materials processing applications where the mid-infrared laser wavelength provides a clear advantage. The use of a Master Oscillator Power Amplifier approach enables the scaling of the output power and energy beyond what is efficiently achievable from a single resonator with the desired beam properties. Here we present a compact, power scalable, Ho:YAG thin-slab gain module, pumped by a continuous wave Tm:YLF slab laser, that is suitable for multiple seed sources and could be set up in a single-, double- or multi-pass amplifier configuration. The numerical and experimental studies include spatial and temporal analyses of the gain provided by the thin-slab amplifier in continuous-wave, kHz ns-pulsed and MHz ultra-short-pulse operation.
{"title":"Gain Analysis of a Compact Ho:YAG Slab Amplifier, End-Pumped by a High Power Tm:YLF Slab Laser","authors":"D. Morris, Michael E. Reilly, M. Esser","doi":"10.1109/CLEOE-EQEC.2019.8871506","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871506","url":null,"abstract":"High-power and high-energy lasers at 2 μm are becoming increasingly important for materials processing applications where the mid-infrared laser wavelength provides a clear advantage. The use of a Master Oscillator Power Amplifier approach enables the scaling of the output power and energy beyond what is efficiently achievable from a single resonator with the desired beam properties. Here we present a compact, power scalable, Ho:YAG thin-slab gain module, pumped by a continuous wave Tm:YLF slab laser, that is suitable for multiple seed sources and could be set up in a single-, double- or multi-pass amplifier configuration. The numerical and experimental studies include spatial and temporal analyses of the gain provided by the thin-slab amplifier in continuous-wave, kHz ns-pulsed and MHz ultra-short-pulse operation.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"11 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89639870","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 : 2019-10-17DOI: 10.1109/CLEOE-EQEC.2019.8871462
E. Nitiss, Tianyi Liu, T. Kippenberg, D. Grassani, C. Brès
Silicon Nitride (S13N4) waveguide platforms have seen significant interest in the recent years, motivated by several advantageous properties such as compatibility with CMOS fabrication standards, low propagation loss, high refractive index and optical nonlinearity suggesting multiple applications in integrated linear and nonlinear optics. Unfortunately, Si3N4 does not exhibit second order nonlinear optical properties due to its amorphous nature. Yet, recently several groups showed a build-up in time of a second harmonic (SH) when a pulsed high power pump is coupled in an Si3N waveguide [1–3]. This phenomenon, referred to as all-optical poling, is explained by the growth of an harmonic space-charge modulated χ(2) grating which quasi-phase matches the pump and its SH [4].
{"title":"Optically Probed Time Dynamics of χ(2) Grating Inscription in SiN Waveguides","authors":"E. Nitiss, Tianyi Liu, T. Kippenberg, D. Grassani, C. Brès","doi":"10.1109/CLEOE-EQEC.2019.8871462","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871462","url":null,"abstract":"Silicon Nitride (S13N4) waveguide platforms have seen significant interest in the recent years, motivated by several advantageous properties such as compatibility with CMOS fabrication standards, low propagation loss, high refractive index and optical nonlinearity suggesting multiple applications in integrated linear and nonlinear optics. Unfortunately, Si3N4 does not exhibit second order nonlinear optical properties due to its amorphous nature. Yet, recently several groups showed a build-up in time of a second harmonic (SH) when a pulsed high power pump is coupled in an Si3N waveguide [1–3]. This phenomenon, referred to as all-optical poling, is explained by the growth of an harmonic space-charge modulated χ(2) grating which quasi-phase matches the pump and its SH [4].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"26 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75334777","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 : 2019-10-17DOI: 10.1109/cleoe-eqec.2019.8873062
Zhixin Wang, Yong Liang, B. Meng, Yanting Sun, G. Omanakuttan, E. Gini, M. Beck, I. Sergachev, S. Lourdudoss, J. Faist, G. Scalari
Quantum cascade lasers (QCLs) are the sources of choice for many laser-based applications in the mid-infrared region. Because of the unique 2D in-plane coupling mechanism, a photonic crystal (PhC)-QCL [1] has superior advantages on mode selection, surface emission, and beam control. In this work, we present a large-area (1.5 mm × 1.5 mm) PhC-QCL operating under pulsed mode at room temperature (289 K). The surface-emitting peak power is as high as 1 W.
量子级联激光器(qcl)是中红外区域许多基于激光的应用的首选光源。光子晶体(PhC)-QCL[1]由于其独特的二维平面内耦合机制，在模式选择、表面发射和光束控制等方面具有优越的优势。在这项工作中，我们提出了一个在室温(289 K)脉冲模式下工作的大面积(1.5 mm × 1.5 mm) PhC-QCL，表面发射峰值功率高达1 W。
{"title":"Large Area Surface-Emitting Photonic Crystal Quantum Cascade Laser","authors":"Zhixin Wang, Yong Liang, B. Meng, Yanting Sun, G. Omanakuttan, E. Gini, M. Beck, I. Sergachev, S. Lourdudoss, J. Faist, G. Scalari","doi":"10.1109/cleoe-eqec.2019.8873062","DOIUrl":"https://doi.org/10.1109/cleoe-eqec.2019.8873062","url":null,"abstract":"Quantum cascade lasers (QCLs) are the sources of choice for many laser-based applications in the mid-infrared region. Because of the unique 2D in-plane coupling mechanism, a photonic crystal (PhC)-QCL [1] has superior advantages on mode selection, surface emission, and beam control. In this work, we present a large-area (1.5 mm × 1.5 mm) PhC-QCL operating under pulsed mode at room temperature (289 K). The surface-emitting peak power is as high as 1 W.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"12 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74981942","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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