Semiconductor laser device

Details Semiconductor laser device Semiconductor laser device

1995-11-01

1997-10-07

Davie, James W.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 36, 372109, H01S 310

Patent

active

056755970

ABSTRACT:
A semiconductor laser device includes a semiconductor laser chip emitting a laser light from its front facet and rear facet, a photodiode which receives the light emitted from the rear facet of said semiconductor laser chip, an upper end of the light receiving surface of said photodiode being positioned at a height equal to or lower than the light emitting position of said semiconductor laser chip. Therefore, the return light which returns the monitor photodiode is reduced and the controllability of the APC control can be enhanced.

REFERENCES:
patent: 4768070 (1988-08-01), Takizawa et al.
patent: 4954853 (1990-09-01), Yoshida et al.
patent: 5500768 (1996-03-01), Doggett et al.
patent: 5519720 (1996-05-01), Hirano et al.

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