CPC H01S 5/0264 (2013.01) [H01S 5/02257 (2021.01); H01S 5/06236 (2013.01)] | 18 Claims |
1. A light source device comprising:
a laser diode comprising an emission end surface for emitting laser light and a rear end surface opposite to the emission end surface;
a reflecting member that reflects a portion of the laser light emitted from the emission end surface of the laser diode;
a photodetector configured to detect light that is reflected at the reflecting member;
a light-shielding member disposed between the rear end surface of the laser diode and the photodetector, the light-shielding member configured to shield at least a portion of light emitted from the rear end surface of the laser diode; and
a glass cap covering the laser diode and the light-shielding member, the glass cap comprising a front glass wall that serves as the reflecting member, and a rear glass wall located between the light-shielding member and the photodetector.
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