Optical device with phase-locked diodelaser array

Details Optical device with phase-locked diodelaser array Optical device with phase-locked diodelaser array

1988-03-02

1990-02-27

Sugarman, Scott J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

35016212, 35016215, 350448, 369112, G02B 1310, G02B 2746, G11B 700

Patent

active

049040685

ABSTRACT:
An optical device includes a phase-locked diodelaser array (10), a collimator lens (17), and behind the collimator lens a prism system (30, 34) of at least one prism to broaden the far field radiation pattern in the lateral plane (XY) and a spatial filter (19) to select a favored mode. The laser radiation is concentrated into a single, round and diffraction limited spot (V).

REFERENCES:
patent: 4082431 (1978-04-01), Ward, III
patent: 4323297 (1982-04-01), Kawamura et al.
patent: 4410237 (1983-10-01), Veldkamp
patent: 4580879 (1986-04-01), Wilson
patent: 4643538 (1987-02-01), Wilson
patent: 4759616 (1988-07-01), Marchant
patent: 4770507 (1988-09-01), Arimoto et al.

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