Observation of phonon-assisted laser operation of Al/sub x/Ga/sub 1-//sub x/As-GaAs quantum well heterostructures

Journal Article · Mon Mar 13 04:00:00 EST 1989 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.100786· OSTI ID:6224510

Jr, Holonyak N; Nam, D W; Plano, W E; Vesely, E J; Hsieh, K C

Data are presented showing that the key to observing the phonon-assisted photopumped laser operation of narrow rectangular samples of Al/sub x/Ga/sub 1-//sub x/As-GaAs quantum well heterostructures (QWHs) is the control of the edge-to-edge resonator Q across the sample. If the sample is heat sunk in metal, with metal reflectors folded upward along the edges, the resonator Q across the sample is high, and laser operation across the sample on confined-particle states (a reference) and along the sample a phonon lower in energy (..delta..Eapprox. =(h/2..pi..)..omega../sub LO/) is observed. If the sample edges across the sample are left uncoated (weakly reflecting, low Q), laser operation is observed only along the sample (longitudinal modes) but shifted (..delta..Eapprox. =(h/2..pi..)..omega../sub LO/) below the confined-particle states and absorption. A QWH rectangle, with proper heat sinking and control of its edge-to-edge resonator Q, can act as a hot-phonon ''spectrometer'' if it is fully photopumped across its width and is only partially pumped along its length.

• Research Organization: Electrical Engineering Research Laboratory, Center for Compound Semiconductor Microelectronics, and Materials Research Laboratory, University of Illinois at Urbana--Champaign, Urbana, Illinois 61801
• OSTI ID: 6224510
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 54:11; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
ELECTRONIC EQUIPMENT
EQUIPMENT
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
HETEROJUNCTIONS
JUNCTIONS
LASERS
OPERATION
OPTICAL PUMPING
PHONONS
PNICTIDES
PUMPING
QUASI PARTICLES
RESONATORS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS