Laser thermal control using thermoelectric cooler

Details Laser thermal control using thermoelectric cooler Laser thermal control using thermoelectric cooler

1995-04-19

1997-02-11

Scott, Jr., Leon

Coherent light generators

Particular temperature control

372 25, 372 36, H01S 304

Patent

active

056028601

ABSTRACT:
A system uses a parallel switch/thermoelectric cooler circuit between a voltage source and a subsystem having a laser diode in thermal contact with the thermoelectric cooler. The switch opens when the temperature is above a switch temperature such that current is supplied to the thermoelectric cooler in order to cool the laser. The thermoelectric cooler uses energy which would otherwise be wasted in a voltage regulator. The subsystem includes an optical transmitter using the laser to send signals. An alternate arrangement uses a pulse width modulator to provide proportional control for more precise regulation of the laser temperature.

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