610-nm band AlGaInP single quantum well laser diode
- 1 February 1994
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 6 (2) , 128-131
- https://doi.org/10.1109/68.275404
Abstract
The short-wavelength limits of AlGaInP visible laser diodes with Al/sub 0.5/In/sub 0.5/P cladding layers, and Ga/sub x/In/sub 1/spl minus/x/P single quantum well (QW) active regions are investigated. Good performance is maintained throughout the 620 nm band, but the characteristics rapidly degrade in the 610 nm band. Biaxial-compression and -tension were compared, with the case of tension yielding slightly better performance. Using a 25 /spl Aring/ Ga/sub 0.45/In/sub 0.55/P QW, a wavelength of 614 nm was obtained, while a 50 /spl Aring/ Ga/sub 0.6/In/sub 0.4/P QW emitted at 620 nm with a threshold current density of 0.8 kA/cm/sup 2/. These results with thin single QWs indicate the effectiveness of using an Al/sub 0.5/In/sub 0.5/P cladding layer to reduce electron leakage.<>Keywords
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