Electro-optic sideband generation at 72 GHz
- 24 April 1989
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 54 (17) , 1622-1624
- https://doi.org/10.1063/1.101324
Abstract
Sidebands are observed at 72 GHz off an optical carrier at 633 nm. The laser beam is phase modulated in a LiNbO3 crystal which is exposed to a mm‐wave field inside a Fabry–Perot resonator. Under optimum phase‐matching conditions we obtain a modulation index of 5% derived from 200 mW microwave power. Phase matching is obtained by guiding the light beam on a zig‐zag path under internal total reflections. For this unconventional type of phase matching, the optical wave fronts travel at twice the speed of the modulating wave along the resonator axis.Keywords
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