Carson Moseley, Summer Bolton, Joseph Lukens, Yun-Yi Pai, Michael Chilcote, Benjamin Lawrie, Shunqiao Sun, Madison Woodson, Steven Estrella, Seongsin Margaret Kim, Patrick Kung
Quantum devices present the potential for unparalleled computing and communications capabilities; however, the cryogenic temperatures required to successfully control and read out many qubit platforms can prove to be very challenging to scale. Recently, there has emerged an interest in using microwave photonics to deliver control signals down to ultracold stages via optical fiber, thereby reducing thermal load and facilitating dense wavelength multiplexing. Photodetectors can then convert this optical energy to electrical signals for qubit control. The fidelity of the quantum operations of interest therefore depend heavily upon the characteristics of the photodiode, yet experimental demonstrations of fiber-coupled photodetection systems at low temperatures are relatively few in number, leaving important open questions regarding how specific detectors may perform in real-world cryogenic settings. In this work, we examine a highly linear modified uni-traveling carrier photodiode (MUTC-PD) under C-band illumination (1530–1565 nm) at three temperature regimes (300 K, 80 K, and ∼4 K) and multiple bias conditions. Our findings of reduced responsivity but preserved bandwidth are consistent with previous studies, while our saturation tests suggest a variety of potential applications for MUTC-PDs in cryogenic microwave photonics with and without electrical bias. Overall, our results should provide a valuable foundation for the continued and expanding use of this detector technology in quantum information processing.
{"title":"Investigation of Modified Uni-Traveling Carrier Photodiode for Cryogenic Microwave Photonic Links","authors":"Carson Moseley, Summer Bolton, Joseph Lukens, Yun-Yi Pai, Michael Chilcote, Benjamin Lawrie, Shunqiao Sun, Madison Woodson, Steven Estrella, Seongsin Margaret Kim, Patrick Kung","doi":"10.1364/optcon.502533","DOIUrl":"https://doi.org/10.1364/optcon.502533","url":null,"abstract":"Quantum devices present the potential for unparalleled computing and communications capabilities; however, the cryogenic temperatures required to successfully control and read out many qubit platforms can prove to be very challenging to scale. Recently, there has emerged an interest in using microwave photonics to deliver control signals down to ultracold stages via optical fiber, thereby reducing thermal load and facilitating dense wavelength multiplexing. Photodetectors can then convert this optical energy to electrical signals for qubit control. The fidelity of the quantum operations of interest therefore depend heavily upon the characteristics of the photodiode, yet experimental demonstrations of fiber-coupled photodetection systems at low temperatures are relatively few in number, leaving important open questions regarding how specific detectors may perform in real-world cryogenic settings. In this work, we examine a highly linear modified uni-traveling carrier photodiode (MUTC-PD) under C-band illumination (1530–1565 nm) at three temperature regimes (300 K, 80 K, and ∼4 K) and multiple bias conditions. Our findings of reduced responsivity but preserved bandwidth are consistent with previous studies, while our saturation tests suggest a variety of potential applications for MUTC-PDs in cryogenic microwave photonics with and without electrical bias. Overall, our results should provide a valuable foundation for the continued and expanding use of this detector technology in quantum information processing.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136057799","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}
A bridge-type photonic crystal (PhC) nanocavity based on Er,O-codoped GaAs is employed to realize enhancement of Er luminescence. By adjusting the structural design and measurement temperature, the cavity mode's wavelength can be coupled to Er luminescence. The peak emission intensity from an Er-2O defect center was enhanced 7.3 times at 40 nW pump power and 77 K. The experimental Q-factor is estimated to be over 1.2 × 10 4 , and the luminescence intensity shows superlinearity with excitation power, suggesting Er luminescence amplification. This result would pave the way towards the realization of highly efficient single-photon emitters based on rare-earth elements.
{"title":"Enhancement of Er luminescence from bridge-type photonic crystal nanocavities with Er, O-co-doped GaAs","authors":"Zhidong Fang, Jun Tatebayashi, Ryohei Homi, Masayuki Ogawa, Hirotake Kajii, Masahiko Kondow, Kyoko Kitamura, Brandon Mitchell, Shuhei Ichikawa, Yasufumi Fujiwara","doi":"10.1364/optcon.501666","DOIUrl":"https://doi.org/10.1364/optcon.501666","url":null,"abstract":"A bridge-type photonic crystal (PhC) nanocavity based on Er,O-codoped GaAs is employed to realize enhancement of Er luminescence. By adjusting the structural design and measurement temperature, the cavity mode's wavelength can be coupled to Er luminescence. The peak emission intensity from an Er-2O defect center was enhanced 7.3 times at 40 nW pump power and 77 K. The experimental Q-factor is estimated to be over 1.2 × 10 4 , and the luminescence intensity shows superlinearity with excitation power, suggesting Er luminescence amplification. This result would pave the way towards the realization of highly efficient single-photon emitters based on rare-earth elements.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135647672","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}
We propose and demonstrate a technique to control the balance between the two amplitudes of a dual-wavelength laser based on a phase-controlled optical feedback. The feedback cavity length is adjusted to achieve a relative phase shift between the desired emission wavelengths, introducing a boost in gain for one wavelength while the other wavelength experiences additional losses. Tuning the optical feedback phase proves to be an effective way to control the gain and losses, and, thus, to select one or balance the amplitude of the two emission wavelengths. This concept can be easily adapted to any platform, wavelength range and wavelength separations providing that a sufficient carrier coupling and gain can be obtained for each mode. To demonstrate the feasibility and to evaluate the performance of this approach, we have implemented two dual-wavelength lasers with different spectral separations together with individual optical feedback loops onto a InP generic foundry platform emitting around 1550 nm. An electro-optical-phase-modulator is used to tune the feedback phase. With this single control parameter, we successfully achieved extinction ratios of up to 38.6 dB for a 10 nm wavelength separation and up to 49 dB for a 1 nm wavelength separation.
{"title":"Control of dual-wavelength laser emission viaoptical feedback phase tuning","authors":"Robert Pawlus, Stefan Breuer, Martin Virte","doi":"10.1364/optcon.502550","DOIUrl":"https://doi.org/10.1364/optcon.502550","url":null,"abstract":"We propose and demonstrate a technique to control the balance between the two amplitudes of a dual-wavelength laser based on a phase-controlled optical feedback. The feedback cavity length is adjusted to achieve a relative phase shift between the desired emission wavelengths, introducing a boost in gain for one wavelength while the other wavelength experiences additional losses. Tuning the optical feedback phase proves to be an effective way to control the gain and losses, and, thus, to select one or balance the amplitude of the two emission wavelengths. This concept can be easily adapted to any platform, wavelength range and wavelength separations providing that a sufficient carrier coupling and gain can be obtained for each mode. To demonstrate the feasibility and to evaluate the performance of this approach, we have implemented two dual-wavelength lasers with different spectral separations together with individual optical feedback loops onto a InP generic foundry platform emitting around 1550 nm. An electro-optical-phase-modulator is used to tune the feedback phase. With this single control parameter, we successfully achieved extinction ratios of up to 38.6 dB for a 10 nm wavelength separation and up to 49 dB for a 1 nm wavelength separation.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135648209","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}
Mark Bergen, Seth Lowry, Michael Mitchell, Matthias Jenne, Christopher Collier, Jonathan Holzman
Wireless communication systems have evolved through a pursuit for broader bandwidths and a drive to higher frequencies. The drive has continued to present day and is now approaching the terahertz (THz) spectrum, where there exists great potential for broadband communication—and equally great challenges. Of note are the challenges of mobility for conventional THz transmitters, which have low transmitted powers, large sizes, and high power consumption. The proposed work recognizes these challenges and introduces the concept of retro-modulation in passive THz transceivers to have them establish passive THz links. Conventional (active) THz transceivers and links are contrasted to the proposed (passive) THz transceivers and links, with experimental and theoretical results given for THz retro-modulators having corner-cube and spherical retroreflectors with optical and electrical modulators. Ultimately, the findings show that passive THz links with high-frequency electronic transmitters and detectors and the proposed THz retro-modulators are capable of operation with signal-to-noise ratios between 10 to 20 dB at 300 GHz. Such findings open the door to future bidirectional THz wireless communication systems with mobile THz transceivers.
{"title":"Terahertz wireless communication systems: challenges and solutions for realizations of effective bidirectional links","authors":"Mark Bergen, Seth Lowry, Michael Mitchell, Matthias Jenne, Christopher Collier, Jonathan Holzman","doi":"10.1364/optcon.500014","DOIUrl":"https://doi.org/10.1364/optcon.500014","url":null,"abstract":"Wireless communication systems have evolved through a pursuit for broader bandwidths and a drive to higher frequencies. The drive has continued to present day and is now approaching the terahertz (THz) spectrum, where there exists great potential for broadband communication—and equally great challenges. Of note are the challenges of mobility for conventional THz transmitters, which have low transmitted powers, large sizes, and high power consumption. The proposed work recognizes these challenges and introduces the concept of retro-modulation in passive THz transceivers to have them establish passive THz links. Conventional (active) THz transceivers and links are contrasted to the proposed (passive) THz transceivers and links, with experimental and theoretical results given for THz retro-modulators having corner-cube and spherical retroreflectors with optical and electrical modulators. Ultimately, the findings show that passive THz links with high-frequency electronic transmitters and detectors and the proposed THz retro-modulators are capable of operation with signal-to-noise ratios between 10 to 20 dB at 300 GHz. Such findings open the door to future bidirectional THz wireless communication systems with mobile THz transceivers.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135689453","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}
Avijit Ghosh, Md. Ferdous Rahman, Md. Rasidul Islam, Md. Shoriful Islam, M. Hossain, Sagar Bhattarai, Rahul panday, Jaya Madan, Md. Atikur Rahman, Abu Bakar Ismail
Inorganic perovskite materials have recently received significant consideration in the sector of solar technology because of their tremendous structural, optical, and electronic strengths. This research exhaustively inquired about the structural, optical, and electronic characteristics of the inorganic cubic perovskite Sr 3 AsI 3 utilizing the first-principles density-functional theory (FP-DFT). The Sr3AsI3 molecule exhibits a direct bandgap of 1.265 eV value at Γ point. According to band characteristics, this component has a strong absorption capability in the region of visibility, as demonstrated by optical parameters including dielectric functions, absorption coefficient, reflectivity, and electron loss function. It is discovered that the spikes of the dielectric constant of Sr 3 AsI 3 are visible in the photon energy range which are suitable for solar cells. As a result, the Sr 3 AsI 3 perovskite is considered suitable for the application of energy production and light management in solar cells.
{"title":"Structural, electronic and optical characteristics of inorganic cubic perovskite Sr<sub>3</sub>AsI<sub>3</sub>","authors":"Avijit Ghosh, Md. Ferdous Rahman, Md. Rasidul Islam, Md. Shoriful Islam, M. Hossain, Sagar Bhattarai, Rahul panday, Jaya Madan, Md. Atikur Rahman, Abu Bakar Ismail","doi":"10.1364/optcon.495816","DOIUrl":"https://doi.org/10.1364/optcon.495816","url":null,"abstract":"Inorganic perovskite materials have recently received significant consideration in the sector of solar technology because of their tremendous structural, optical, and electronic strengths. This research exhaustively inquired about the structural, optical, and electronic characteristics of the inorganic cubic perovskite Sr 3 AsI 3 utilizing the first-principles density-functional theory (FP-DFT). The Sr3AsI3 molecule exhibits a direct bandgap of 1.265 eV value at Γ point. According to band characteristics, this component has a strong absorption capability in the region of visibility, as demonstrated by optical parameters including dielectric functions, absorption coefficient, reflectivity, and electron loss function. It is discovered that the spikes of the dielectric constant of Sr 3 AsI 3 are visible in the photon energy range which are suitable for solar cells. As a result, the Sr 3 AsI 3 perovskite is considered suitable for the application of energy production and light management in solar cells.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135648207","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}
{"title":"Complex refractive index measurements of Poly(methyl methacrylate) (PMMA) over the UV-VIS-NIR region","authors":"Hong Pham, Hung Nguyen, Hoa Nghiem","doi":"10.1364/optcon.495634","DOIUrl":"https://doi.org/10.1364/optcon.495634","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830068","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}
{"title":"Exploring the Impact of Incubation Times and Concentrations of Self-Assembled Monolayers on Electron Transfer in Biosensing","authors":"Aymen Qatamin, Shadi Alnaanah","doi":"10.1364/optcon.502172","DOIUrl":"https://doi.org/10.1364/optcon.502172","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135199230","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}
Arsham Hamidi, Yakub Bayhaqi, Alexander Navarini, Philippe Cattin, Azhar Zam, Ferda Canbaz
Optical coherence tomography (OCT) combined with an ablative Er:YAG laser has been recognized as a promising technique for real-time monitoring and controlling the depth of laser-induced cuts during laser osteotomy procedures. In this study, a miniaturized OCT-assisted Er:YAG laser system was developed for controlled laser ablation of bone tissue. The developed system involved coupling a high-power Er:YAG laser into a sapphire fiber with a core diameter of 425 µm and miniaturizing the sample arm of a long-range swept-source OCT system. Controlled laser osteotomy experiments were performed to evaluate the performance of the miniaturized setup. Real-time depth monitoring and control were achieved through an optical shutter controlled by the OCT system. The experimental results showed controlled ablation with a mean accuracy of 0.028 mm when targeting depths of 1 mm, 3 mm, and 5 mm on cow femur bones. These results demonstrate the potential of the developed miniaturized OCT-assisted Er:YAG laser system for use in robotic-assisted minimally-invasive laser osteotomy.
{"title":"Towards Miniaturized OCT-Guided LaserOsteotomy: Integration of Fiber-Coupled Er:YAGLaser with OCT","authors":"Arsham Hamidi, Yakub Bayhaqi, Alexander Navarini, Philippe Cattin, Azhar Zam, Ferda Canbaz","doi":"10.1364/optcon.497483","DOIUrl":"https://doi.org/10.1364/optcon.497483","url":null,"abstract":"Optical coherence tomography (OCT) combined with an ablative Er:YAG laser has been recognized as a promising technique for real-time monitoring and controlling the depth of laser-induced cuts during laser osteotomy procedures. In this study, a miniaturized OCT-assisted Er:YAG laser system was developed for controlled laser ablation of bone tissue. The developed system involved coupling a high-power Er:YAG laser into a sapphire fiber with a core diameter of 425 µm and miniaturizing the sample arm of a long-range swept-source OCT system. Controlled laser osteotomy experiments were performed to evaluate the performance of the miniaturized setup. Real-time depth monitoring and control were achieved through an optical shutter controlled by the OCT system. The experimental results showed controlled ablation with a mean accuracy of 0.028 mm when targeting depths of 1 mm, 3 mm, and 5 mm on cow femur bones. These results demonstrate the potential of the developed miniaturized OCT-assisted Er:YAG laser system for use in robotic-assisted minimally-invasive laser osteotomy.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135768727","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：