Phase-locked laser array with phase-shifting surface coating

Details Phase-locked laser array with phase-shifting surface coating Phase-locked laser array with phase-shifting surface coating

1983-12-20

1989-02-14

Sikes, William L.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 18, 372 27, H01S 313

Patent

active

048051764

ABSTRACT:
A phase-locked semiconductor laser array having a plurality of lasing regions includes phase-shifting means on the emitting surface thereof through which laser light is emitted. The phase-shifting means provide a phase shift for those laser beams passing therethrough so that the phases of all the emitted laser beams are substantially the same. The phase-shifting means include a coating on the emitting surface which has a spatially varying thickness in the lateral direction.

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Ackley et al., "Phase-Locked Injection Laser Arrays with Integrated Phase Shifters", RCA Review, vol. 44, Dec. 1983, pp. 625-633.
Matsumoto et al., "Single-Lobed Far-Field Pattern Operation in a Phased Array with an Integrated Phase Shifter," Appl. Phys. Lett, 50 (22), 1 Jun. 1987, pp. 1541-1543.
Taneya et al., "Stable Quasi 0.degree. Phase Mode Operation in a Laser Array Diode Nearly Aligned with a Phase Shifter", Appl. Phys. Lett., 50 (13), 30 Mar. 1987, pp. 783-785.
Taneya et al., Abstract, "Diffrection-Limited Single Beam Emitted from an Array Diode with a Phase Shifter", Conference on Lasers and Electro-Optics, 26 Apr.-1 May 1987, Baltimore, Md., pp. 316-317.

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