Laser diode of variable beam divergence and information processo

Details Laser diode of variable beam divergence and information processo Laser diode of variable beam divergence and information processo

1991-08-19

1993-08-31

Lee, John D.

Coherent light generators

Particular active media

Semiconductor

369 4423, 3692752, H01S 319

Patent

active

052415546

ABSTRACT:
The present invention relates to a laser diode and a highly precise light information processor using the same, particularly a laser diode which controls the diameter of a current flowing through an active layer and changes the emitting area of the active layer, a laser printer which is suited to half tone expression with high image quality by using the above semiconductor laser device, and an optical disk device which can record data surely.

REFERENCES:
patent: 3736046 (1973-05-01), Zook
patent: 4995049 (1991-02-01), Kahen et al.
Applied Physics Letters, vol. 54, No. 4, Jan. 23, 1989, "Integration of a Diode Laser and an Electronic Lens for Controlling the Beam Focus Position", S. Mukai et al, pp. 315-316.

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