Browse Prior Art Database

MODIFICATION OF THE CURVATURE AND/OR PHASE OF AN A000 WAVEFRONT

IP.com Disclosure Number: IPCOM000023676D
Original Publication Date: 1978-Oct-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 297K

Publishing Venue

Xerox Disclosure Journal

Abstract

The present invention provides a simplified technique for modifying the curvature and/or phase of an acoustic wavefront generated in an acousto-opticmedium utilized in modulating or deflecting laser light, In particular, the invention is directed to a technique which allows the generation of an acoustic wavefront which is curved or which has discrete shifts in phase along the acousto-optic interaction path without bonding transducers to complex surfaces with all the attendant difficulties associated therewith. Specifically,

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Page 1 of 2

XEROX DU3CLOSURE JOURNAL

MODIFICATION OF THE CURVATURE
AND/OR PHASE OF AN A000
WAVEFRONT
Leonard C, DeBenedictjs

Proposed Classification

U,S, Cl, 350/161W
mt. Cl. G02b 5/23

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2

8

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FIG. /~

The present invention provides a simplified technique for
modifying the curvature and/or phase of an acoustic wavefront
generated in an acousto~opticmedium utilized in modulating or
deflecting laser light, In particular, the invention is
directed to a technique which allows the generation of an
acoustic wavefront which is curved or which has discrete
shifts in phase along the acousto~optic interaction path
without bonding transducers to complex surfaces with all the
attendant difficulties associated therewith. Specifically,

FIG. lb

6

3

FIG. Ic

Volume 3 Number 5 September/October 1978 337

[This page contains 1 picture or other non-text object]

Page 2 of 2

MODIFICATION OF THE CURVATURE AND/OR PHASE OF AN ACOUSTIC
WAVEFRONT (Cont d)

referring to Figure 1, an array of transducers 1 are bonded to
or deposited on a flat surface 2 of acoustic medium 3 and the
acoustic wavefront emanating therefrom is modified upon
reflection at different surfaces 4, 5 or 6 on the substrate
which has been specifically prepared to produce the desired
changes~

Selected transducers of the array are excited by a high
frequency R,F, field and a traveling acoustic wave is then
launched into substrate 3 which acts as the acousto~'optic
medium, In Figure 1(a), the launched acoustic wave is
incident on curved acoustically...