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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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Subject: search.filters.subject.surface emitting lasers

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Now showing 1 - 6 of 6
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    Continuous-Wave Lasing of 1.3-mu m Quantum-Dot Photonic-Crystal Surface-Emitting Lasers
    (2018-01-01)
    Hsu, Ming-Yang
    ;
    Lin, Gray
    ;
    Pan, Po-Chou
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    Chen, Yu-Chen
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    電子工程學系及電子研究所
    Fabrication of electrically injected quantum-dot photonic-crystal (PC) surface-emitting lasers (SELs) is simplified by deposition of indium-tin-oxide over "PC slab-on-substrate" structure. Temperature-insensitive threshold current behavior is exhibited for negatively detuned PCSEL where continuous-wave lasing emission at 1308.4 nm is demonstrated for the first time.
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    Photonic Crystal Surface Emitting Lasers with InAs/InGaAs/GaAs Quantum Dots
    (2017-01-01)
    Chen, Tzu-Shan
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    Lee, Zong-Lin
    ;
    Hsu, Ming-Yang
    ;
    Lin, Gray
    ;
    Lin, Sheng-Di
    InAs/InGaAs/GaAs quantum-dot (QD) photonic crystal (PC) surface emitting lasers were fabricated and room-temperature lasing emissions were demonstrated by optical pumping for the first time. The etch depth of PC holes is the critical parameter for adjacent diffraction coupling between PC structure and QD gain media.
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    Photonic Crystal Surface Emitting Lasers With Quantum Dot Active Region
    (2017-10-15)
    Chen, Tzu-Shan
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    Li, Zong-Lin
    ;
    Hsu, Ming-Yang
    ;
    Lin, Gray
    ;
    Lin, Sheng-Di
    GaAs-based InAs/InGaAs/GaAs quantum dot (QD) photonic crystal (PC) surface emitting lasers of 1.3 mu m wavelength range are fabricated and room-temperature lasing emissions by optical pumping are demonstrated for the first time. Laser devices are characterized in terms of PC parameters and temperature-dependent measurements are also carried out. The impact of wavelength detuning between PC resonant wavelength and QD gain peak is manifested in the experiments. Moreover, simplified simulation reveals that etched PC depth plays an even more critical role in active region of QD compared to that of quantum well.
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    Electrically pumped quantum dot surface emitting lasers with Bragg grating capped by ITO cladding layers
    (2016)
    Hong, Kuo-Bin
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    Chang, Ting-Yuan
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    Pan, Chien-Hung
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    Lin, Chien-Hung
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    Lin, Gray
    QD based Bragg gratings surface emitting lasers using ITO as transparent cladding layers were demonstrated. Measured lasing peak locates at 1298nm and threshold current density of 210 A/cm(2). The laser shows extremely small divergence surface-emitted beam and thermal redshift of 0.08 nm/K in peak wavelength.
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    Continuous wave operation of current injected GaN vertical cavity surface emitting lasers at room temperature
    (2010-08-16)
    Lu, Tien-Chang
    ;
    Chen, Shih-Wei
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    Wu, Tzeng-Tsong
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    Tu, Po-Min
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    Chen, Chien-Kang
    We report the demonstration of the continuous wave laser action on GaN-based vertical cavity surface emitting lasers at room temperature. The laser structure consists of a ten-pair Ta(2)O(5)/SiO(2) distributed Bragg reflector (DBR), a 7 lambda-thick optical cavity, ten-pairs InGaN/GaN multiquantum wells with an AlGaN electron blocking layer, and a 29-pair AlN/GaN DBR. The laser has a threshold current of about 9.7 mA corresponding to the current density of about 12.4 kA/cm(2) and a turn-on voltage about 4.3 V at 300 K. The lasing wavelength was 412 nm with a linewidth of about 0.5 nm. A spontaneous emission coupling efficiency factor of about 5x10(-3) and the degree of polarization of about 55% were measured, respectively. The laser beam has a narrow divergence angle of about 8 degrees. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483133]
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    Lasing characteristics at different band edges in GaN photonic crystal surface emitting lasers
    (2010-02-15)
    Chen, S. W.
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    Lu, T. C.
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    Hou, Y. J.
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    Liu, T. C.
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    Kuo, H. C.
    We have investigated the lasing characteristics of GaN-based two-dimensional photonic crystal surface emitting lasers (PCSELs) with different PC lattice constants by using angled resolved spectroscopy. Due to the Bragg diffraction theory, normalized frequency of lasing wavelength of PCSELs can be exactly matched with three distinct band-edge frequencies (Gamma 1, K2, and M3) in the photonic band diagram. The three band-edge frequencies (Gamma 1, K2, and M3) have different emission angles corresponding to the normal direction of the sample (0 degrees, 29 degrees, and 59.5 degrees).