Transient protection circuit

Details Transient protection circuit Transient protection circuit

1995-12-11

1997-03-11

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 29, H01S 300

Patent

active

056109318

ABSTRACT:
Semiconductor lasers are susceptible to harmful high currents or high voltage electrical transients. Semiconductor pump lasers are especially vulnerable to electrical transients under normal operation because of the large continuous wave current needed to drive the semiconductor pump laser to achieve a high optical power. A protection circuit for 980 nm pump lasers using a non-linear voltage-dependent resistance means which limits drive current based on a drive voltage powering a laser diode is demonstrated to be effective in guarding the laser against harmful electrical transients.

REFERENCES:
patent: 4069465 (1978-01-01), Kouchich et al.
patent: 4348648 (1982-09-01), Childs
patent: 4489415 (1984-12-01), Jones, Jr.
patent: 4780598 (1988-10-01), Fahey et al.
patent: 4999728 (1991-03-01), Curl
patent: 5537287 (1996-07-01), Dreier

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