1 February 2008 Mode referencing of an external cavity diode laser for continuous frequency stabilization
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Optical Engineering, 47(2), 024301 (2008). doi:10.1117/1.2844700
Abstract
The output of an external cavity diode laser (ECDL) is frequency stabilized to a water (H2O) vapor absorption line at 935 nm using wavelength modulation spectroscopy (WMS) by means of a dual-feedback locking loop. A novel mode-referencing technique is presented that, in conjunction with the feedback locking mechanism, helps improve the overall frequency-locking system. The mode-referencing enables the device output to maintain its locked frequency in the presence of environmental and other effects, which may cause the operational characteristics of the laser to drift.
David McInerney, Michael Lynch, John F. Donegan, Vincent Weldon, "Mode referencing of an external cavity diode laser for continuous frequency stabilization," Optical Engineering 47(2), 024301 (1 February 2008). http://dx.doi.org/10.1117/1.2844700
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KEYWORDS
Laser stabilization

Ferroelectric materials

Semiconductor lasers

Absorption

Modulation

Wavelength tuning

Temperature metrology

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