Improvement of kink characteristics performance of GaAs VCSEL with a indium-tin-oxide top transparent overcoating

Lai, Fang‐I; Chang, Ya-Wen; Hsueh, Ting-Jen; Huang, H. W.; Laih, Li-Hong; Kuo, Hao‐Chung; Wang, S.C.; Guung, T.C.

doi:10.1016/j.mseb.2004.07.091

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2023

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“…[6][7][8] Their performances could be greatly improved through the introduction of oxide apertures, ion implanted sublayers, and indium tin oxide (ITO). [9][10][11][12][13][14][15][16] However, it is still difficult to implement a high-performance GaAs VCSEL with excellent light emission efficiency while minimizing problems such as internal heat, wavelength shift, and Fabry-Perot dip shift.…”

Section: Introductionmentioning

confidence: 99%

Improved optical efficiency of GaAs-based infrared vertical-cavity surface-emitting laser enabled by combining a metallic reflector and a Bragg reflector

Jang,

Lee,

Kim

et al. 2023

Journal of Vacuum Science &Amp; Technology A

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The use of coupled reflectors was investigated to improve the device performance of GaAs-based 860 nm vertical-cavity surface-emitting lasers (VCSELs). Here, the combined reflector was fabricated by coupling a metallic reflector (Ag) and a distributed Bragg reflector of an epitaxial structure. The performance parameters of the VCSEL, such as light-emitting efficiency, operational voltage, and power consumption, were dramatically improved by using a combined reflector. As a result, infrared GaAs-based VCSELs with combined reflectors could show superior light-emitting performance and reduced operational threshold voltage characteristics compared to conventional VCSELs.

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