Thermally insensitive, single-crystal, biaxial electro-optic modulators
- Lawrence Livermore National Laboratory, 7000 East Avenue, L-250, Livermore, California 94550 (United States)
All optically biaxial crystals exhibit orientations in which they behave as thermally insensitive (TI) wave plates. Given sufficient electro-optic coupling at these orientations, biaxial, ferroelectric crystals may be advantageously employed as single-crystal, temperature-insensitive electro-optic modulators. I have experimentally confirmed the TI orientation in the principal dielectric plane of the biaxial crystal KTiOPO{sub 4} (KTP). KTP behaves as a TI wave plate at 33.7 deg from the {ital Z} axis in the {ital X}--{ital Z} principal plane. The effective electro-optic coupling, {ital R}{sub eff}, at this orientation is 19 pm/V. The electro-optic coupling and utility of these TI orientations in KTiOAsO{sub 4} and KNbO{sub 3} are also examined. The calculated {ital R}{sub eff} of KNbO{sub 3} at the TI orientation is expected to be {gt}2000 pm/V.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 69061
- Journal Information:
- Journal of the Optical Society of America, Part B: Optical Physics, Journal Name: Journal of the Optical Society of America, Part B: Optical Physics Journal Issue: 6 Vol. 12; ISSN JOBPDE; ISSN 0740-3224
- Country of Publication:
- United States
- Language:
- English
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