Browsing by Author "Pan, Po-Chou"

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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
;
Chen, Yu-Chen
;
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.
Effect of Thermal Management on the Performance of VCSELs
(2020-09-01)
Pan, Po-Chou
;
Nag, Dhiman
;
Khan, Zuhaib
;
Chen, Ching-Jung
;
Shi, Jin-Wei
This study investigated the effect of thermal management on the performance of vertical-cavity surface-emitting lasers (VCSELs). It was found that the thickness of silicon substrate, which can serve as the submount for VCSEL packages, has a strong influence on the thermal dissipation of on-chip laser sources, and eventually impacts on their output characteristics. Moreover, the improvements in optical characteristics of the on-chip VCSELs were the best heat dissipation through thinning silicon substrates to 50-mu m thickness combined with electroplated Cu with 100-mu m thickness. In addition, this study also performed COMSOL simulations. The simulation results were consistent with experimental results.
Threshold current temperature dependence of quantum-dot photonic crystal surface-emitting lasers with respect to gain-cavity detuning
(2018-05-14)
Hsu, Ming-Yang
;
Lin, Gray
;
Li, Zong-Lin
;
Pan, Po-Chou
;
電機學院
We investigate threshold current temperature dependence of electrically injected quantum-dot (QD) photonic crystal (PC) surface-emitting lasers (SELs) with respect to wavelength detuning between QD gain peak and PC cavity resonance. The lasing emissions cover wavelengths from 1283 nm to 1318 nm. Almost infinite characteristic temperature is realized at certain temperature range for PCSEL with large negative gain-cavity detuning. Moreover, band-edge lasing mode is identified in our "PC slab-on-substrate" structure, and its far-field distribution is characterized as doughnut-shaped beam with azimuthal polarization. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement