Browsing by Author "Wu, Shu-Hsien"

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Blue GaN-based surface-emitting lasers incorporating a sub-wavelength high contrast grating
(2013-01-01)
Wu, Tzeng-Tsong
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Wu, Shu-Hsien
;
Chen, Hao-Wen
;
Lu, Tien-Chang
;
Wang, Shing-Chung
Blue GaN-based surface-emitting lasers incorporating a sub-wavelength high contrast grating were reported. The laser characteristics such as threshold energy, degree of polarization and divergence angle were measured to be 0.56 mJ/cm(2), 73% and 12 degrees. (C) 2013 Optical Society of America
Fano resonances GaN-based high contrast grating surface-emitting lasers
(2013)
Wu, Tzeng-Tsong
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Wu, Shu-Hsien
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Lu, Tien-Chang
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Kuo, Hao-Chung
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Wang, Shing-Chung
GaN-based high contrast grating surface-emitting lasers (HCG SELs) with AlN/GaN distributed Bragg reflectors were reported. The device exhibited a low threshold pumping energy density of about 0.56 mJ/cm(2) and the lasing wavelength was at 393.6 nm with a high degree of polarization of 73% at room temperature. The specific lasing mode and polarization characteristics agreed well with the theoretical modeling. The low threshold characteristics of our GaN-based HCG SELs utilized by the Fano resonance can be potential for development of blue surface emitting laser sources
GaN-based high contrast grating surface-emitting lasers
(2013-02-25)
Wu, Tzeng-Tsong
;
Wu, Shu-Hsien
;
Lu, Tien-Chang
;
Wang, Shing-Chung
;
光電工程學系
GaN-based high contrast grating surface-emitting lasers (HCG SELs) with AlN/GaN distributed Bragg reflectors were reported. The device exhibited a low threshold pumping energy density of about 0.56 mJ/cm(2) and the lasing wavelength was at 393.6 nm with a high degree of polarization of 73% at room temperature. The specific lasing mode and polarization characterisitcs agreed well with the theoretical modeling. The low threshold characteristics of our GaN-based HCG SELs faciliated by the Fano resonance can serve as the best candidate in blue surface emitting laser sources. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794081]
GaN-based surface-emitting lasers using high contrast grating
(2014)
Lu, Tien-Chang
;
Wang, Shing-Chung
;
Wu, Tzeng-Tsong
;
Wu, Shu-Hsien
;
Syu, Yu-Cheng
GaN-based surface-emitting lasers (SELs) using high contrast grating (HCG) with AlN/GaN distributed Bragg reflectors were reported. The laser device achieved a threshold energy density of about 0.56 mJ/cm(2) and the lasing wavelength was at 393.6 nm with a high degree of polarization of 73% at room temperature. The resonant mode and polarization characteristics matched to the theoretical prediction. GaN-based SELs using HCG supported by the Fano resonance can be potential for development of blue surface emitting laser sources