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Visible, room-temperature, surface-emitting laser using an epitaxial Fabry--Perot resonator with AlGaAs/AlAs quarter-wave high reflectors and AlGaAs/GaAs multiple quantum wells

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.97916· OSTI ID:6947184
We report operation of a new surface-emitting laser. This epitaxial laser is fabricated with molecular beam epitaxy by the growth of quarter-wave high reflectors of AlAs/Al/sub 0.4/Ga/sub 0.6/As (710 A/630 A) which surround a 4.5-..mu..m-thick multiple quantum well of GaAs/Al/sub 0.4/Ga/sub 0.6/As (100 A/200 A). We characterize the structure with cw spectroscopy (absorption, reflection, and luminescence) and investigate stimulated emission spectra under pulsed photopumping. When photopumped, the structure lases in its as-grown condition without need of substrate removal, cleaving, or heatsinking. The lasing wavelength is as short as 7400 A and can be tuned to as long as 8400 A by positioning the pump spot to different regions across the wafer. The pulsed threshold irradiance has a very weak temperature dependence varying from 6 x 10/sup 5/ W/cm/sup 2/ at 4.2 K to 1.6 x 10/sup 6/ W/cm/sup 2/ at 295 K.
Research Organization:
Sandia National Laboratories, Albuquerque, New Mexico 87185
DOE Contract Number:
AC04-76DP00789
OSTI ID:
6947184
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 50:18; ISSN APPLA
Country of Publication:
United States
Language:
English