Semiconductor laser device

Details Semiconductor laser device Semiconductor laser device

H - Electricity

01

S

345/32

H01S 3/101 (2006.01) G02B 6/42 (2006.01) H01S 3/00 (2006.01)

Patent

CA 2005957

ABSTRACT OF THE DISCLOSURE A semiconductor laser device comprises a semiconductor laser light emitting element, and a cap that cover. and hermetically seals the laser light emitting element. Laser light emitted from the element goes out through a hole formed in the top wall Or the cap. Reflected light blocking means is disposed in the hole in the top wall of the cap. The reflected light blocking means comprises a twisted-nematic liquid crystal cell and a pair of polarizers between which the twisted-nematic liquid crystal cell is disposed.

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