Wavelength stabilization of tunable lasers by current modulation
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United States of America Patent
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Jun 1, 2004
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N/A
app pub date -
Oct 26, 2000
filing date -
Oct 26, 1999
priority date (Note) -
Expired
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Abstract
Apparatus and method for stabilizing the wavelength of a tunable laser to a target wavelength, by correspondingly adjusting the electrooptical performance of the laser's gain medium, whereby to eliminate the frequency shift due to vibrational factors. The electrooptical performance of the laser's gain medium is adjusted, in the case of an electrically pumped laser, by changing the injection current used to pump the laser; and the electrical performance of the laser's gain medium is adjusted, in the case of an optically pumped laser, by changing the intensity of the pump laser used to energize the laser. The system is implemented with a feedback mechanism.
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