Increasing the impedance of solid state light source subsystems

Details Increasing the impedance of solid state light source subsystems Increasing the impedance of solid state light source subsystems

1997-06-25

1999-04-13

Davie, James W.

Coherent light generators

Particular component circuitry

Optical pumping

359187, H01S 310, H04B 1004

Patent

active

058944907

ABSTRACT:
The input impedance of a laser subsystem is matched to the output impedance of its driver by means of a current/series or voltage/series-connected negative feedback loop which generates an electronic feedback signal from the laser output. A combiner combines the feedback signal and the drive signal and applies a difference signal to the laser. In another embodiment, a transformer is disposed between the driver and the combiner to decrease the apparent output impedance of the driver, thereby facilitating the impedance matching function of the feedback loop.

REFERENCES:
patent: 4369525 (1983-01-01), Breton et al.
patent: 4625105 (1986-11-01), Hentschel et al.
patent: 5444564 (1995-08-01), Newberg
patent: 5471492 (1995-11-01), Pidgeon, Jr. et al.
patent: 5477367 (1995-12-01), Van Der Heijden
Millman et al., Integrated Electronics: Analog and Digital Circuits and Systems, Ch. 13, pp. 408-445 (1972) (No month).

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