A FAR-INFRARED COUPLED-CAVITY INTERFEROMETER
- 15 May 1971
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 18 (10), 440-442
- https://doi.org/10.1063/1.1653485
Abstract
A coupled‐cavity HCN laser interferometer (337 μ) is described. Phase‐shift sensitivity of 1/20 fringe (∫n dl=1.6×1013 cm−2 for free electrons) has been achieved. The present time resolution of 6 μsec is determined by the available mechanical motion and is not the limit of the interferometer capability. The use of this laser for measuring a low‐density transient plasma is illustrated.Keywords
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