Acoustooptic device capable of internally cooling an acoustoopti

Details Acoustooptic device capable of internally cooling an acoustoopti Acoustooptic device capable of internally cooling an acoustoopti

1987-05-29

1988-12-20

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

350358, 372 13, 372 35, G02F 111

Patent

active

047929308

ABSTRACT:
In an acoustooptic device for use in acoustooptically controlling a laser beam in response to an electric signal, an acoustooptic element is packaged in a housing which defines an internal space therein and which can circulate a coolant in the internal space through inlet and outlet portions to directly cool the acoustooptic element by the coolant. The housing comprises a case block providing the internal space and a pair of cap members which forms windows for the laser beam, respectively, and which is hermetically attached to the case block with a pair of seal members interposed between the case block and each of the cap members. Each seal member comprises a first O-ring placed around the window and a second O-ring placed outside of the first O-ring to hermetically seal the internal space. The acoustooptic element may comprise an acoustooptic medium having a pair of surfaces for the laser beam and a side surface contiguous to the surface, a transducer mounted on the side surface, and an absorber opposite the transducer. The internal space may be divided into first and second internal spaces.

REFERENCES:
patent: 3399013 (1968-08-01), Aas et al.
patent: 3675022 (1972-07-01), Nelson et al.
patent: 4119929 (1978-10-01), Shackleford et al.
patent: 4229079 (1980-10-01), Wayne et al.
patent: 4669085 (1987-05-01), Plourde et al.
"Performance Limits of Acoustooptic Light Deflectors due to Thermal Effects", by Hans Eschler, Appl. Physics, 1976.

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