Power source control apparatus for laser diode

Details Power source control apparatus for laser diode Power source control apparatus for laser diode

1998-08-31

2000-10-24

Font, Frank G.

Coherent light generators

Particular component circuitry

Optical pumping

372 35, H01S 304, H01S 300

Patent

active

06137816&

ABSTRACT:
A power source control apparatus has a constant current circuit and plural laser diodes. Switching elements are connected in parallel between anodes and cathodes of the laser diodes. Forward voltage drop of the switching elements is set lower than forward voltage drop of the laser diodes. When constant current output from the constant current circuit flows through the laser diodes, the switching element either short-circuits or opens the anode and cathode of the laser diode. Thus, current path is switched vise versa.

REFERENCES:
patent: 4400812 (1983-08-01), Clark et al.
patent: 4491742 (1985-01-01), Akamatsu
patent: 5068862 (1991-11-01), Zimmermann et al.
patent: 5374798 (1994-12-01), Kinbara
patent: 5666045 (1997-09-01), Grodevant
patent: 5801375 (1998-09-01), Sasaki et al.

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