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Optical Engineering

Mode referencing of an external cavity diode laser for continuous frequency stabilization
Author(s): David McInerney; Michael Lynch; John F. Donegan; Vincent Weldon
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Paper 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.

Paper Details

Date Published: 1 February 2008
PDF: 5 pages
Opt. Eng. 47(2) 024301 doi: 10.1117/1.2844700
Published in: Optical Engineering Volume 47, Issue 2
Show Author Affiliations
David McInerney, The Univ. of Dublin, Trinity College (Ireland)
Michael Lynch, The Univ. of Dublin, Trinity College (Ireland)
John F. Donegan, The Univ. of Dublin, Trinity College (Ireland)
Vincent Weldon, The Univ. of Dublin, Trinity College (Ireland)


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