Laser unit

Details Laser unit Laser unit

1994-01-26

1996-02-06

Davie, James W.

Coherent light generators

Particular temperature control

Heat sink

H01S 302

Patent

active

054901588

ABSTRACT:
A laser unit includes a semiconductor laser tip mounted on a substrate of a material such as Si, a monitoring photodiode, and a laser driving integrated circuit, all of which are fixed to a base member of a material, such as metal, by soldering or the like. Further, a collimator lens is fixed to the base member by using, for example, ultraviolet ray hardening resin. The base member is provided with a step or slope portion, or a cut-away portion, formed at its laser-light-emission end, whereby the laser unit can be made compact and the distance between the semiconductor laser tip and the laser driving circuit can be shortened.

REFERENCES:
patent: 4912715 (1990-03-01), Aoki et al.
patent: 4926433 (1990-05-01), Imamura et al.
patent: 5052005 (1991-09-01), Tanaka et al.
patent: 5113404 (1992-05-01), Gaebe et al.
patent: 5247530 (1993-09-01), Shigeno et al.

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