Semiconductor laser element suitable for production by a MO-CVD

Coherent light generators – Particular active media – Semiconductor

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372 46, 357 17, H01S 319

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active

046673326

ABSTRACT:
A semiconductor laser element includes a first cladding layer of first conductivity type provided on a semiconductor substrate of the first conductivity type; a current blocking layer of a second conductivity type provided on the first cladding layer having a stripe groove from which the first cladding layer and is exposed at the bottom thereof; a light guide layer of the first conductivity type provided covering the current blocking layer, the stripe groove, and the first cladding layer exposed from the groove; an active layer provided on the light guide layer curved in the neighborhood of the stripe groove, whose refractive index is larger than that of the light guide layer; and a second cladding layer of the second conductivity type provided on the active layer, whose refractive index is smaller than that of the active layer.

REFERENCES:
patent: 4480331 (1984-10-01), Thompson
"Visible GaAlAs V-Channeled Substrate Inner Stripe Laser with Stabilized Mode Using p-GaAs Substrate", S. Yamamoto et al, Applied Physics Letters, vol. 40, pp. 372 to 374.
"Single-Longitudinal-Mode cw Room-Temperature Ga.sub.1-x Al.sub.x As--GaAs Channel-Guide Lasers Grown by Metal Organic Chemical Vapour Deposition", by R. D. Dupuis et al, Applied Physics Letters, vol. 33, pp. 724 to 726.

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