Acousto-optic transducer
US4527866A · kind A · utility
5Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1983 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Mar 30, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/17
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrum analyzer incorporates a 36.degree. Y cut lithium niobate Bragg cell provided on one face with an interdigital transducer. The 36.degree. Y cut maximizes the ratio of quasi-longitudinal to quasi-shear wave piezoelectric coupling with the interdigital transducer and thereby minimizes the output of spurious signals from the analyzer. In a preferred embodiment the Bragg cell comprises two lithium niobate crystals bonded by a metal (preferably gold) film, the crystal attached to the transducer being 36.degree. Y cut and the other crystal being cut so as to maximize acousto-optic coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.