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Optically pumped vertical-cavity surface-emitting lasers at 375 nm with air-gap/Al0.05Ga0.95N distributed Bragg reflectors
Author(s): Young Jae Park; Theeradetch Detchprohm; Karan Mehta; Jialin Wang; Hoon Jeong; Yuh-Shiuan Liu; Ping Chen; Shuo Wang; Shyh-Chiang Shen; P. Douglas Yoder; Fernando Ponce; Russell Dupuis
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Paper Abstract

Optically pumped VCSELs with a 1λ thick optical cavity lasing at 375 nm have been demonstrated using a pulsed 248 nm KrF excimer laser source. To realize a high-reflectivity mirror on the bottom of the cavity, five-period airgap/ Al0.05Ga0.95N DBRs with a large refractive index contrast have been employed while the top mirror was formed by dielectric DBRs consisting of twelve pairs HfO2/SiO2. The lowest threshold incident power density measured at room temperature was estimated to be ~270 kW/cm2. The achieved optically pumped VCSEL demonstrates the possibility that the airgap/AlxGa1-xN DBRs can be used as a mirror for injection laser devices.

Paper Details

Date Published: 1 March 2019
PDF: 7 pages
Proc. SPIE 10938, Vertical-Cavity Surface-Emitting Lasers XXIII, 109380A (1 March 2019); doi: 10.1117/12.2510268
Show Author Affiliations
Young Jae Park, Georgia Institute of Technology (United States)
Theeradetch Detchprohm, Georgia Institute of Technology (United States)
Karan Mehta, Georgia Institute of Technology (United States)
Jialin Wang, Georgia Institute of Technology (United States)
Hoon Jeong, Georgia Institute of Technology (United States)
Yuh-Shiuan Liu, Georgia Institute of Technology (United States)
Ping Chen, Georgia Institute of Technology (United States)
Shuo Wang, Arizona State Univ. (United States)
Shyh-Chiang Shen, Georgia Institute of Technology (United States)
P. Douglas Yoder, Georgia Institute of Technology (United States)
Fernando Ponce, Arizona State Univ. (United States)
Russell Dupuis, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 10938:
Vertical-Cavity Surface-Emitting Lasers XXIII
Kent D. Choquette; Luke A. Graham, Editor(s)

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