Semiconductor laser module

Details Semiconductor laser module Semiconductor laser module

1989-06-09

1991-11-26

Gonzalez, Frank

Coherent light generators

Particular temperature control

Heat sink

385 34, 385 51, H01S 3043, G02B 642

Patent

active

050688650

ABSTRACT:
A semiconductor laser module comprises a semiconductor laser device, an optical fiber, and a lens for coupling light emitted from the semiconductor laser device to the optical fiber. There is provided a metal base having a flat portion and a pipe portion in a metal case. The semiconductor laser device is mounted on a chip carrier which is mounted on the flat portion of the metal base. The lens is fixed in the inside of the pipe portion of the metal base. The optical fiber is protected at one end by a ferrule which is fixed to the pipe portion of the metal base. A device such as a monitor photodiode and a thermistor may be mounted on the flat portion of the metal base. The flat portion of the metal base may be formed with a concave portion of an area smaller than an area of the bottom of the chip carrier. The chip carrier is soldered to the flat portion of the metal base by a low temperature solder to provide thermal connection therebetween, and by a spot welding at a point other than the soldered portion of the low temperature solder.

REFERENCES:
patent: 4399541 (1983-08-01), Kovats et al.
patent: 4523802 (1985-06-01), Sakaguchi et al.
patent: 4623220 (1986-11-01), Grabbe et al.
patent: 4708429 (1987-11-01), Clark et al.
patent: 4752109 (1988-06-01), Gordon et al.

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