LASER DIODE DRIVE CIRCUIT AND LASER APPARATUS

摘要

Disclosed is a laser diode drive circuit wherein a plurality of prisms (13a, 13b) are provided corresponding to a plurality of laser diodes (11a, 11c), and guide laser light emitted from the laser diodes. A light transmitting means (14a) is formed on a surface of at least one prism of the plurality of prisms, and transmits a part of laser light totally reflected by means of the prisms. A light receiving means (15) receives the part of the laser light transmitted through the light transmitting means. On the basis of the intensity of the laser light received by means of the light receiving means, a control means (16) controls outputs of the laser diodes to a predetermined level.