A simple rapid thermal length control for lasers and etalons
- 1 July 1978
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 11 (7) , 647-648
- https://doi.org/10.1088/0022-3735/11/7/014
Abstract
Resistance heating may be used to release the tension in a highly stressed wire and thus produce small displacements. This principle has been employed in a device for tuning the length of a fused-silica etalon. Force changes of over 540 N were produced with only 5 W of control power required. A servo length-control system incorporating this driving element operated with an 80 ms response time.Keywords
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