Stripe-geometry double heterojunction laser device

Details Stripe-geometry double heterojunction laser device Stripe-geometry double heterojunction laser device

1979-02-21

1982-01-05

Davie, James W.

Oscillators

Molecular or particle resonant type

H01S 319

Patent

active

043096689

ABSTRACT:
A stripe-shaped excitation region is provided in an active layer of a double heterojunction laser device, the excitation region and the other region of the active layer being endowed with an effective refractive index difference or optical absorption coefficient difference therebetween, and a carrier injection region is provided contiguously to the excitation region, whereby the laser device exhibits a low ohmic resistance, effects a stable lower-order transverse mode oscillation and suppresses relaxation oscillations. By preventing the stripe-shaped excitation region and the carrier injection region from being exposed to reflective surfaces, the aforecited beneficial results can be realized over a wide range of operating currents, and a laser device of extremely high power density emission is achieved due to the increase of the threshold of the catastrophic optical damage on mirrors.

REFERENCES:
patent: 3363195 (1968-01-01), Furnanage et al.
patent: 4105955 (1978-08-01), Hayashi et al.
Casey et al., Heterostructure Lasers Part B, published by Academic Press Inc., N. Y., 1978, pp. 207-216 and 307.

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