Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 11, 2009
Patent Application Number
11127083
Date Filed
May 12, 2005
Patent Primary Examiner
Patent abstract
A nitride semiconductor laser device includes a nitride semiconductor laser element having a resonator end surface and capable of emitting light with a wavelength of at most 420 nm, a heat sink joined to the nitride semiconductor laser element, a stem with the heat sink mounted thereon, and a light detecting element mounted on the stem for detecting a laser beam from the nitride semiconductor laser element. The nitride semiconductor laser element, the heat sink and the light detecting element are enclosed within a cap that is joined to the stem, and an atmosphere within the cap has a dew point of at most −30° C. and an oxygen concentration of at most 100 ppm.
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