Method and apparatus for active numeric temperature compensation of an etalon in a wavelength stabilized laser

Method and apparatus for active numeric temperature compensation of an etalon in a wavelength stabilized laser

A unique method and apparatus for locking on an absolute wavelength of laser light output by a laser package by actively compensating for a change in the temperature of an etalon optical filter is disclosed. Changes in etalon response characteristics due to temperature changes are compensated for by...

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Hauptverfasser: BROUTIN SCOTT L, PLOURDE JAMES K, STAYT JOHN W
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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creator BROUTIN SCOTT L
PLOURDE JAMES K
STAYT JOHN W
description A unique method and apparatus for locking on an absolute wavelength of laser light output by a laser package by actively compensating for a change in the temperature of an etalon optical filter is disclosed. Changes in etalon response characteristics due to temperature changes are compensated for by the addition (or subtraction) of an output voltage offset to the voltage control signal sent to the Thermo-Electric Cooler (TEC) from a controller within the laser package. The voltage offset is calculated by monitoring the etalon temperature. The voltage offset value provides for active compensation of changes in the etalon temperature and effectively "readjusts" the output of the laser as if the etalon temperature itself had been readjusted.
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subjects BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
title Method and apparatus for active numeric temperature compensation of an etalon in a wavelength stabilized laser
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