Coherent light generators – Particular beam control device – Scanning
Patent
1994-08-04
1996-06-04
Davie, James W.
Coherent light generators
Particular beam control device
Scanning
372 45, 372 46, 372 50, H01S 310, H01S 319
Patent
active
055240135
ABSTRACT:
A laser diode capable of having the position and emitting direction of its laser beam readily varied as desired through control over injected currents. The laser diode has an independent current injecting region in a waveguide (intermediate region) near the mirror facet of the laser diode, the center axis of the current injecting region differing from that of another waveguide (straight region). Suitably modulating the currents injected into the current injecting region generates a desired refractive index profile, whereby beam scan is obtained as desired.
REFERENCES:
patent: 5214664 (1993-05-01), Paoli
Extended Abstracts of the 1991 International Conference on Solid State Devices and Materials, Yokohama, 1991, pp. 338-340; N. Ogasawara et al.: Beam Deflection and Mode Switching Characteristics in Coupled Twin-Stripe Lasers (no month).
Nakatsuka Shin'ichi
Saito Susumu
Davie James W.
Hitachi , Ltd.
Hitachi Koki Co,. Ltd.
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