JPH0229551U - - Google Patents

Description

[Brief explanation of drawings]

1 is a perspective view schematically showing an example of a semiconductor laser device according to the present invention, FIG. 2 is a sectional view of the example shown in FIG. 1, and FIG. 3 is an explanation of the operation of the example shown in FIG. 1. 4 is a characteristic diagram showing the output characteristics of the example shown in FIG. 1 and the conventional semiconductor laser device, and FIG. 5 is a circuit for controlling the drive current for the example shown in FIG. 1. A circuit diagram showing an example of
FIGS. 6 and 7 are perspective views showing conventional semiconductor laser devices. In the figure, 21 is a laser diode, 22 is a semiconductor substrate, 24 is an upper electrode layer, 25 and 27 are cladding layers, 26 is an active layer, 29 is a lower electrode layer, 32 and 33 are side surfaces, 34 is a total reflection film, 35 is a photodiode.

Claims (1)

[Claims for Utility Model Registration] It has a pair of opposing side surfaces, one of the opposing side surfaces is provided with a laser beam emitting part, and the other side is provided with a total reflection film for the laser beam, and is fixed on a substrate. a semiconductor laser element, and a semiconductor light receiver disposed on one side of the opposing side surface of the semiconductor laser element in or on the substrate and receiving a portion of the laser light emitted from the laser light emitting part of the semiconductor laser element; A semiconductor laser device comprising: an element;