Compensating circuit for high power lasers

Details Compensating circuit for high power lasers Compensating circuit for high power lasers

1990-04-17

1991-11-26

Gonzalez, Frank

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, H01S 3133

Patent

active

050688634

ABSTRACT:
A circuit which improves the linearity of a high power laser diode is disclosed. A electrical diode is coupled to the anode of the laser diode and a filter/bias network back biases the laser diode and forward biases the PN diode. At lower current levels the amount of current flowing through the laser diode is lowered. At higher current levels, rolloff in the PN diode allows more current through the laser diode. The rolloff performance of the laser diode and PN diode mirror each other closely enough to improve the laser's linear performance by 3 dB to 5 dB.

REFERENCES:
patent: 4075474 (1978-02-01), Straus et al.
patent: 4101847 (1978-07-01), Albanese
patent: 4672192 (1987-06-01), Muka et al.
patent: 4733398 (1988-03-01), Shibagaki
patent: 4912714 (1990-03-01), Hatanaka et al.

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