Pub Date : 2018-12-18DOI: 10.1103/PhysRevB.99.205303
C. Panuski, M. Pant, M. Heuck, D. Englund
Considering the free-carrier dispersion effect at the limit of a single photoexcited charge carrier pair suggests the possibility of realizing single-photon detection through a high-Q/V semiconductor cavity.
{"title":"Single-Photon Detection by Cavity-Assisted All-Optical Gain","authors":"C. Panuski, M. Pant, M. Heuck, D. Englund","doi":"10.1103/PhysRevB.99.205303","DOIUrl":"https://doi.org/10.1103/PhysRevB.99.205303","url":null,"abstract":"Considering the free-carrier dispersion effect at the limit of a single photoexcited charge carrier pair suggests the possibility of realizing single-photon detection through a high-Q/V semiconductor cavity.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"19 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81773486","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 : 2018-11-15DOI: 10.1109/JLT.2018.2869373
G. Jain, M. Wallace, R. McKenna, Kevin Brazel, F. Bello, Q. Lu, W. Guo, J. Donegan
A ridge waveguide multi period structure within 37th order surface grating semiconductor laser is presented. These gratings allow wide tuning over the C-band while allowing for low threshold and high SMSR.
{"title":"Design Optimization for Semiconductor Lasers with High-Order Surface Gratings having Multiple Periods","authors":"G. Jain, M. Wallace, R. McKenna, Kevin Brazel, F. Bello, Q. Lu, W. Guo, J. Donegan","doi":"10.1109/JLT.2018.2869373","DOIUrl":"https://doi.org/10.1109/JLT.2018.2869373","url":null,"abstract":"A ridge waveguide multi period structure within 37th order surface grating semiconductor laser is presented. These gratings allow wide tuning over the C-band while allowing for low threshold and high SMSR.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"131 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74239581","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 : 2018-09-01DOI: 10.1109/IRMMW-THZ.2018.8509941
C. Liewald, F. Keilmann
We demonstrate 50-nm resolved near-field imaging at λ=500 μm for the first time, using a high-harmonic microwave circuit for emitting/detecting via free space to a standard s-SNOM, and map conductivity contrasts at near single-charge sensitivity.
{"title":"All-electronic THz Nanoscopy","authors":"C. Liewald, F. Keilmann","doi":"10.1109/IRMMW-THZ.2018.8509941","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8509941","url":null,"abstract":"We demonstrate 50-nm resolved near-field imaging at λ=500 μm for the first time, using a high-harmonic microwave circuit for emitting/detecting via free space to a standard s-SNOM, and map conductivity contrasts at near single-charge sensitivity.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"86 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79102351","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 theoretically predicted and experimentally verified mirror-protected nodal chains in a metallic-mesh photonic crystal at microwave frequencies. The bulk states were detected through angle-resolved transmission and drumhead surface states were mapped out by field scans.
{"title":"Experiments on topological nodal chains","authors":"Qinghui Yan, Rongjuan Liu, Zhongbo Yan, Boyuan Liu, Hongsheng Chen, Zhong Wang, Ling Lu","doi":"10.1364/CLEO_QELS.2018.FM3Q.8","DOIUrl":"https://doi.org/10.1364/CLEO_QELS.2018.FM3Q.8","url":null,"abstract":"We theoretically predicted and experimentally verified mirror-protected nodal chains in a metallic-mesh photonic crystal at microwave frequencies. The bulk states were detected through angle-resolved transmission and drumhead surface states were mapped out by field scans.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"9 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81835380","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 : 2018-08-09DOI: 10.1364/CLEO_SI.2018.SW4C.4
M. Scaffardi, M. Malik, F. Paolucci, E. Lazzeri, N. Zhang, C. Klitis, A. Sgambelluri, M. Lavery, F. Cugini, M. Sorel, A. Bogoni
A two-layer orbital angular momentum and wavelength based switch is presented and characterized up to 100Gb/s with coherent polarization-multiplexed real data traffic. The switch is successfully reconfigured by applying an OpenFlow based SDN control plane.
{"title":"OpenFlow-Control of an OAM-Based Two-Layer Switch Supporting 100Gb/s Real Data-Traffic","authors":"M. Scaffardi, M. Malik, F. Paolucci, E. Lazzeri, N. Zhang, C. Klitis, A. Sgambelluri, M. Lavery, F. Cugini, M. Sorel, A. Bogoni","doi":"10.1364/CLEO_SI.2018.SW4C.4","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2018.SW4C.4","url":null,"abstract":"A two-layer orbital angular momentum and wavelength based switch is presented and characterized up to 100Gb/s with coherent polarization-multiplexed real data traffic. The switch is successfully reconfigured by applying an OpenFlow based SDN control plane.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"68 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72878474","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 : 2018-08-06DOI: 10.1364/CLEO_SI.2018.SM4N.7
R. Nagymihály, H. Cao, P. Jójárt, V. Zuba, M. Kalashnikov, A. Borzsonyi, V. Chvykov, K. Osvay
Spectral phase shift of ultra-broadband pulses due to inversion was measured along the two axes of Ti:Sapphire at room and cryogenic temperatures. Results are crucial for CEP stabilization and compression of high energy few-cycle pulses.
{"title":"Inversion caused spectral phase shift in a broadband Ti:Sapphire amplifier at room and cryogenic temperatures","authors":"R. Nagymihály, H. Cao, P. Jójárt, V. Zuba, M. Kalashnikov, A. Borzsonyi, V. Chvykov, K. Osvay","doi":"10.1364/CLEO_SI.2018.SM4N.7","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2018.SM4N.7","url":null,"abstract":"Spectral phase shift of ultra-broadband pulses due to inversion was measured along the two axes of Ti:Sapphire at room and cryogenic temperatures. Results are crucial for CEP stabilization and compression of high energy few-cycle pulses.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"30 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82793645","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 : 2018-08-06DOI: 10.1364/CLEO_SI.2018.SF1K.7
E. Allen, G. Ferranti, D. Mahler, K. Rusimova, P. Mosley, J. Matthews
We demonstrate classical laser amplitude noise suppression at 4.5 MHz using hollow-core free-boundary fibre. We attain suppression of 2.0 dB and get to within 0.2 dB of the shot-noise limit.
{"title":"Low-frequency suppression of classical laser fluctuations using hollow-core fibre","authors":"E. Allen, G. Ferranti, D. Mahler, K. Rusimova, P. Mosley, J. Matthews","doi":"10.1364/CLEO_SI.2018.SF1K.7","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2018.SF1K.7","url":null,"abstract":"We demonstrate classical laser amplitude noise suppression at 4.5 MHz using hollow-core free-boundary fibre. We attain suppression of 2.0 dB and get to within 0.2 dB of the shot-noise limit.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"88 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83811321","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 : 2018-08-06DOI: 10.1364/CLEO_SI.2018.STH3G.4
D. Pellegrino, F. Pagliano, A. Genco, M. Petruzzella, F. V. van Otten, A. Fiore
We experimentally demonstrate the control over the emission of quantum dots embedded in photonic molecules via mode field modulation. By locally changing the cavity frequencies we control, and even suppress, spontaneous emission.
{"title":"Switching radiative processes via mode field modulation","authors":"D. Pellegrino, F. Pagliano, A. Genco, M. Petruzzella, F. V. van Otten, A. Fiore","doi":"10.1364/CLEO_SI.2018.STH3G.4","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2018.STH3G.4","url":null,"abstract":"We experimentally demonstrate the control over the emission of quantum dots embedded in photonic molecules via mode field modulation. By locally changing the cavity frequencies we control, and even suppress, spontaneous emission.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"41 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78515061","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 : 2018-08-06DOI: 10.1364/CLEO_SI.2018.SW3I.3
Minji Noh, Soonyoung Cha, Jehyun Kim, Jangyup Son, Hyemin Bae, Doeon Lee, Hoil Kim, Jekwan Lee, Hoseung Shin, Sangwan Sim, Seunghoon Yang, Sooun Lee, Gangtae Jin, M. Jo, W. Shim, Chul-Ho Lee, J. S. Kim, Dohun Kim, Hyunyong Choi
We perform a non-local circular photogalvanic measurement and directly generate the valley-coupled spin-polarized electrons from WSe2 to Bi2Se3 topological insulators. Our WSe2-Bi2Se3 heterostructure offers a new optoelectronic platform toward the electrically-controllable valley-spin degree of freedom.
{"title":"Non-Local Detection and Electric Modulation of Valley-Coupled Spin Photocurrents in WSe2-Bi2Se3 Heterostructure Device","authors":"Minji Noh, Soonyoung Cha, Jehyun Kim, Jangyup Son, Hyemin Bae, Doeon Lee, Hoil Kim, Jekwan Lee, Hoseung Shin, Sangwan Sim, Seunghoon Yang, Sooun Lee, Gangtae Jin, M. Jo, W. Shim, Chul-Ho Lee, J. S. Kim, Dohun Kim, Hyunyong Choi","doi":"10.1364/CLEO_SI.2018.SW3I.3","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2018.SW3I.3","url":null,"abstract":"We perform a non-local circular photogalvanic measurement and directly generate the valley-coupled spin-polarized electrons from WSe<inf>2</inf> to Bi<inf>2</inf>Se<inf>3</inf> topological insulators. Our WSe<inf>2</inf>-Bi<inf>2</inf>Se<inf>3</inf> heterostructure offers a new optoelectronic platform toward the electrically-controllable valley-spin degree of freedom.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"71 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87230027","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 : 2018-08-06DOI: 10.1364/CLEO_AT.2018.JTH2A.171
T. Yeh, Chun-Yang Chou, Chun-Ying Huang, Y. Yao, Yi-Kai Haung, M. Tsai, Ya-Ju Lee
The coefficient of thermal expansion (CTE) is a physical quantity that indicates the thermal expansion value of a material upon heating. For advanced thermal management, the accurate and immediate determination of the CTE of packaging materials is gaining importance because the demand for high-power lighting-emitting diodes (LEDs) is currently increasing. In this study, we used optical coherence tomography (OCT) to measure the CTE of an InGaN-based (λ = 450 nm) high-power LED encapsulated in polystyrene resin. The distances between individual interfaces of the OCT images were observed and recorded to derive the instantaneous CTE of the packaged LED under different injected currents. The LED junction temperature at different injected currents was established with the forward voltage method. Most importantly, this work validates the hypothesis that OCT can provide an alternative way to directly and nondestructively determine the spatially resolved CTE of the packaged LED device, which offers significant advantages over traditional CTE measurement techniques.
{"title":"Directly Determining the Coefficient of Thermal Expansion of High-power Light-emitting Diodes by Optical Coherence Tomography","authors":"T. Yeh, Chun-Yang Chou, Chun-Ying Huang, Y. Yao, Yi-Kai Haung, M. Tsai, Ya-Ju Lee","doi":"10.1364/CLEO_AT.2018.JTH2A.171","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2018.JTH2A.171","url":null,"abstract":"The coefficient of thermal expansion (CTE) is a physical quantity that indicates the thermal expansion value of a material upon heating. For advanced thermal management, the accurate and immediate determination of the CTE of packaging materials is gaining importance because the demand for high-power lighting-emitting diodes (LEDs) is currently increasing. In this study, we used optical coherence tomography (OCT) to measure the CTE of an InGaN-based (λ = 450 nm) high-power LED encapsulated in polystyrene resin. The distances between individual interfaces of the OCT images were observed and recorded to derive the instantaneous CTE of the packaged LED under different injected currents. The LED junction temperature at different injected currents was established with the forward voltage method. Most importantly, this work validates the hypothesis that OCT can provide an alternative way to directly and nondestructively determine the spatially resolved CTE of the packaged LED device, which offers significant advantages over traditional CTE measurement techniques.","PeriodicalId":6498,"journal":{"name":"2018 Conference on Lasers and Electro-Optics (CLEO)","volume":"14 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88439363","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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