Pub Date : 2019-05-05DOI: 10.1364/CLEO_AT.2019.JW2A.95
G. Bai, Hui Shen, Meizhong Liu, Kai Liu, Haibo Zhang, Xiaxia Niu, Yifeng Yang, Bing He, Jun Zhou
We demonstrate a single-aperture coherent beam combination with eight fiber laser beamlets using a one-dimention diffractive optical element in an all-optical feedback loop. The maximum output power is 1.5 W with near diffraction-limited beam quality.
{"title":"Single-aperture passive coherent beam combining of fiber lasers based on diffractive optical element","authors":"G. Bai, Hui Shen, Meizhong Liu, Kai Liu, Haibo Zhang, Xiaxia Niu, Yifeng Yang, Bing He, Jun Zhou","doi":"10.1364/CLEO_AT.2019.JW2A.95","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2019.JW2A.95","url":null,"abstract":"We demonstrate a single-aperture coherent beam combination with eight fiber laser beamlets using a one-dimention diffractive optical element in an all-optical feedback loop. The maximum output power is 1.5 W with near diffraction-limited beam quality.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77319872","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 : 2019-05-05DOI: 10.1364/CLEO_AT.2019.JTU2A.40
Yan Liang, Zhihe Liu, Qilai Fei, H. Zeng
Combining ultrashort gates and the robust spike-noise suppression technique, we demonstrate an InGaAs/InP APD based photon-number-resolving detector capable of distinguishing up to 3 photons with the detection efficiency as high as 40% at 1 GHz.
{"title":"GHz Photon-number-resolving Detection with InGaAs/InP APD","authors":"Yan Liang, Zhihe Liu, Qilai Fei, H. Zeng","doi":"10.1364/CLEO_AT.2019.JTU2A.40","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2019.JTU2A.40","url":null,"abstract":"Combining ultrashort gates and the robust spike-noise suppression technique, we demonstrate an InGaAs/InP APD based photon-number-resolving detector capable of distinguishing up to 3 photons with the detection efficiency as high as 40% at 1 GHz.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80385567","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 : 2019-05-05DOI: 10.1364/CLEO_SI.2019.SF3G.1
A. Azarm, F. Akhoundi, N. Peyghambarian
We use erbium and ytterbium femtosecond lasers to melt and shape semi-spherical nanostructure by high spatial frequency laser induced periodic surface structures into linear microstructures of 2 μm long in the direction of laser polarization.
{"title":"Er and Yb femtosecond laser-induced melting and shaping of indium nanostructures on silicon wafers","authors":"A. Azarm, F. Akhoundi, N. Peyghambarian","doi":"10.1364/CLEO_SI.2019.SF3G.1","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2019.SF3G.1","url":null,"abstract":"We use erbium and ytterbium femtosecond lasers to melt and shape semi-spherical nanostructure by high spatial frequency laser induced periodic surface structures into linear microstructures of 2 μm long in the direction of laser polarization.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81612141","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 : 2019-05-05DOI: 10.1364/CLEO_AT.2019.JW2A.40
Shizhen Qu, H. Liang, Xiao Zou, Kun Liu, Wenkai Li, Qi Jie Wang, Ying Zhang
We report the first LiGaS2-based mid-IR OPCPA, pumped by the 1-µm Yb:YAG laser at 10kHz. The idler pulse is centered at 9 µm, covering 7.5-10.2 µm wavelength range, with 13.8 µJ pulse energy.
{"title":"High-energy 9 µm LiGaS2-based Optical Parametric Chirped-Pulse Amplifier","authors":"Shizhen Qu, H. Liang, Xiao Zou, Kun Liu, Wenkai Li, Qi Jie Wang, Ying Zhang","doi":"10.1364/CLEO_AT.2019.JW2A.40","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2019.JW2A.40","url":null,"abstract":"We report the first LiGaS2-based mid-IR OPCPA, pumped by the 1-µm Yb:YAG laser at 10kHz. The idler pulse is centered at 9 µm, covering 7.5-10.2 µm wavelength range, with 13.8 µJ pulse energy.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81683912","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 : 2019-05-05DOI: 10.1364/CLEO_SI.2019.STU4F.6
I. Ilyakov, N. Awari, S. Kovalev, C. Fowley, K. Rode, P. Stamenov, Y. Lau, D. Betto, N. Thiyagarajah, B. Green, O. Yıldırım, J. Lindner, J. Fassbender, M. Coey, A. Deac, M. Gensch
An experimental time-domain, room-temperature study of magnetization precession in ultra-thin Mn3-xGa films excited by femtosecond laser pulses is presented. The thickness dependence of the parameters of THz waves emitted from coherently driven magnetic resonances is investigated.
{"title":"Thickness-Dependent THz Emission From Ultrathin Ferrimagnetic Mn3-xGa Films","authors":"I. Ilyakov, N. Awari, S. Kovalev, C. Fowley, K. Rode, P. Stamenov, Y. Lau, D. Betto, N. Thiyagarajah, B. Green, O. Yıldırım, J. Lindner, J. Fassbender, M. Coey, A. Deac, M. Gensch","doi":"10.1364/CLEO_SI.2019.STU4F.6","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2019.STU4F.6","url":null,"abstract":"An experimental time-domain, room-temperature study of magnetization precession in ultra-thin Mn3-xGa films excited by femtosecond laser pulses is presented. The thickness dependence of the parameters of THz waves emitted from coherently driven magnetic resonances is investigated.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76385400","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 : 2019-05-05DOI: 10.1364/CLEO_AT.2019.JTH2A.35
Qiwei Xu, Xihua Wang
We report a colloidal-quantum-dot photodetector for near-infrared detection. The detector has a CMOS-compatible structure with lower heat generation and interface treatment requirement. The device shows a responsivity of 5.9A/W at 1250 nanometers.
{"title":"Colloidal Quantum Dots for Near-Infrared Phototransistor with CMOS-Compatible Structure","authors":"Qiwei Xu, Xihua Wang","doi":"10.1364/CLEO_AT.2019.JTH2A.35","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2019.JTH2A.35","url":null,"abstract":"We report a colloidal-quantum-dot photodetector for near-infrared detection. The detector has a CMOS-compatible structure with lower heat generation and interface treatment requirement. The device shows a responsivity of 5.9A/W at 1250 nanometers.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85681804","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 : 2019-05-05DOI: 10.1364/CLEO_AT.2019.JTU2A.92
Xing-Yang Cui, Qi Shen, Yan Meichen, Chao Zeng, Tao Yuan, Wen-zhuo Zhang, Xing-Can Yao, Cheng-Zhi Peng, Xiao Jiang, Yu-Ao Chen, Jian-Wei Pan
We present a high-efficiency extra-cavity SHG of high-power CW 1342-nm laser. By employing LBO and PPKTP, we obtained the output power up to 3.3W and 5.2W with the conversion efficiency of 57.9% and 93.8%, respectively.
{"title":"High-power High-efficiency Second Harmonic Generation of 1342-nm Laser in LBO and PPKTP","authors":"Xing-Yang Cui, Qi Shen, Yan Meichen, Chao Zeng, Tao Yuan, Wen-zhuo Zhang, Xing-Can Yao, Cheng-Zhi Peng, Xiao Jiang, Yu-Ao Chen, Jian-Wei Pan","doi":"10.1364/CLEO_AT.2019.JTU2A.92","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2019.JTU2A.92","url":null,"abstract":"We present a high-efficiency extra-cavity SHG of high-power CW 1342-nm laser. By employing LBO and PPKTP, we obtained the output power up to 3.3W and 5.2W with the conversion efficiency of 57.9% and 93.8%, respectively.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88927059","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 : 2019-05-05DOI: 10.1364/CLEO_QELS.2019.FM3D.3
S. Pal, C. Tzschaschel, A. Bortis, T. Satoh, M. Fiebig
We study the correlation dynamics of the complex exchange interaction between the rare-earth and the transition metal in a garnet using two-dimensional terahertz spectroscopy. The THz resonance resembles a convolution of the exchange mode with electron transfer between the Kramer’s doublet.
{"title":"Two-dimensional THz Spectroscopy of Exchange Interactions in Rare-earth Doped Garnets","authors":"S. Pal, C. Tzschaschel, A. Bortis, T. Satoh, M. Fiebig","doi":"10.1364/CLEO_QELS.2019.FM3D.3","DOIUrl":"https://doi.org/10.1364/CLEO_QELS.2019.FM3D.3","url":null,"abstract":"We study the correlation dynamics of the complex exchange interaction between the rare-earth and the transition metal in a garnet using two-dimensional terahertz spectroscopy. The THz resonance resembles a convolution of the exchange mode with electron transfer between the Kramer’s doublet.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"210 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75553532","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 : 2019-05-05DOI: 10.1364/CLEO_AT.2019.AW3P.1
J. Scheuermann, R. Weih, J. Koeth, M. Kamp, S. Höfling
Since distributed feedback interband cascade lasers have already shown to be able to cover a wide window in the mid infrared region (2.8 µm [1] to 5.2 µm [2]) they are suitable light sources for applications where smallest concentrations of several gases have to be traced via absorption spectroscopy. With their broken gap alignment of the two binaries GaSb and InAs, carriers re-enter the conduction band after making a radiative recombination. This enables multiple quantum well stages in a stacked scheme as in quantum cascade lasers. Due to the interband nature of the transition, the gain per stage is larger and fewer stages are required to reach lasing threshold at moderate current levels. With threshold currents in the ten milliampere range, operation voltages below ten volts and output power of a few milliwatts, the interband cascade laser are best suited for spectroscopic applications. We demonstrate an array of multiple spectrally monomode emitters on a single semiconductor chip. The targeted emission wavelengths cover the mid infrared regime from around 3.3 to 3.5 microns.
{"title":"DFB Interband Cascade Laser Array for mid infrared spectroscopy","authors":"J. Scheuermann, R. Weih, J. Koeth, M. Kamp, S. Höfling","doi":"10.1364/CLEO_AT.2019.AW3P.1","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2019.AW3P.1","url":null,"abstract":"Since distributed feedback interband cascade lasers have already shown to be able to cover a wide window in the mid infrared region (2.8 µm [1] to 5.2 µm [2]) they are suitable light sources for applications where smallest concentrations of several gases have to be traced via absorption spectroscopy. With their broken gap alignment of the two binaries GaSb and InAs, carriers re-enter the conduction band after making a radiative recombination. This enables multiple quantum well stages in a stacked scheme as in quantum cascade lasers. Due to the interband nature of the transition, the gain per stage is larger and fewer stages are required to reach lasing threshold at moderate current levels. With threshold currents in the ten milliampere range, operation voltages below ten volts and output power of a few milliwatts, the interband cascade laser are best suited for spectroscopic applications. We demonstrate an array of multiple spectrally monomode emitters on a single semiconductor chip. The targeted emission wavelengths cover the mid infrared regime from around 3.3 to 3.5 microns.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"158 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76477372","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 : 2019-05-05DOI: 10.1364/CLEO_SI.2019.STH3N.5
Yu Han, Si Zhu, B. Shi, Qiang Li, K. Lau
We report the growth of quantum-well and quantum-dot lasers on compliant InP/Si substrates by MOCVD. Laser characteristics at 1.3 to 1.5 µm from whispering-gallery-mode (WGM) micro-lasers, nano-ridge lasers and conventional Fabry-Perot lasers will be described.
{"title":"III-V Lasers Emitting at 1.3 to 1.5 µm grown on (001) silicon by MOCVD (invited)","authors":"Yu Han, Si Zhu, B. Shi, Qiang Li, K. Lau","doi":"10.1364/CLEO_SI.2019.STH3N.5","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2019.STH3N.5","url":null,"abstract":"We report the growth of quantum-well and quantum-dot lasers on compliant InP/Si substrates by MOCVD. Laser characteristics at 1.3 to 1.5 µm from whispering-gallery-mode (WGM) micro-lasers, nano-ridge lasers and conventional Fabry-Perot lasers will be described.","PeriodicalId":72688,"journal":{"name":"Conference on Lasers and Electro-optics : (CLEO). Conference on Lasers and Electro-optics","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73606013","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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