Patent ID: 6714309
Filing Date: 2004-03-30
Classification: H01S

Abstract:
A system for locking a transmission wavelength of a laser to a selected wavelength comprising:a laser wavelength detector for detecting a transmission wavelength of the output beam of the laser; an etalon for splitting a portion of the output beam of the laser into a series of transmission lines; an etalon wavelength detector for detecting the etalon transmission lines; and a control unit for setting the transmission wavelength of the output beam of the laser to a selected wavelength and also for tuning the etalon to align a selected one of the etalon transmission lines to the selected wavelength, the wavelength-locking control unit thereafter detecting any drift of the transmission wavelength of the laser from the selected etalon transmission line and adjusting the laser to compensate for any drift such that the output beam of the laser is locked to the selected transmission wavelength so long as the selected etalon transmission line remains at the selected wavelength.