JPS5619029A - Ultrasonic light modulator - Google Patents

Ultrasonic light modulator

Info

Publication number
JPS5619029A
JPS5619029A JP9404079A JP9404079A JPS5619029A JP S5619029 A JPS5619029 A JP S5619029A JP 9404079 A JP9404079 A JP 9404079A JP 9404079 A JP9404079 A JP 9404079A JP S5619029 A JPS5619029 A JP S5619029A
Authority
JP
Japan
Prior art keywords
crystal plate
speed
modulating medium
electrodes
piezoelectric crystal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9404079A
Other languages
Japanese (ja)
Other versions
JPS6212489B2 (en
Inventor
Yoshinori Oota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9404079A priority Critical patent/JPS5619029A/en
Publication of JPS5619029A publication Critical patent/JPS5619029A/en
Publication of JPS6212489B2 publication Critical patent/JPS6212489B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make speed high and efficiency high by arranging plural elastic materials of different velocities of sound between an acoustooptic modulating medium and a piezoelectric crystal plate symmetrically at the center thereby constituting an ultrasonic modulator.
CONSTITUTION: Ni5 and In6 are evaporated to 3μm thickness on one surface of an acoustooptic modulating medium 1 such as glass and dielecric and are so disposed that the respective centers thereof become symmetrically at an equal spacing. The metal films 5, 6 give a phase difference of π/2 to sound waves. A piezoelectric crystal plate 2 is provided thereon and electrodes 3, 4 are dividedly provided on said crystal plate 2 so that the direction of the elecrtic field applied on each converting element becomes opposite at every two as shown by arrows 7. If high frequency voltage is applied to the electrodes 3, 4, the parallel wave surfaces differing in phase by π/2 are produced in the adjacent sections 9, 10 of the modulating medium, whereby artificial wave surfaces 11, 12 are formed. This increases the incident angle θ of light 13 satisfying Bragg's conditions. Because of this, the speed of modulation may be increased and the speed and perfromance may be made high.
COPYRIGHT: (C)1981,JPO&Japio
JP9404079A 1979-07-24 1979-07-24 Ultrasonic light modulator Granted JPS5619029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9404079A JPS5619029A (en) 1979-07-24 1979-07-24 Ultrasonic light modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9404079A JPS5619029A (en) 1979-07-24 1979-07-24 Ultrasonic light modulator

Publications (2)

Publication Number Publication Date
JPS5619029A true JPS5619029A (en) 1981-02-23
JPS6212489B2 JPS6212489B2 (en) 1987-03-19

Family

ID=14099446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9404079A Granted JPS5619029A (en) 1979-07-24 1979-07-24 Ultrasonic light modulator

Country Status (1)

Country Link
JP (1) JPS5619029A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63245029A (en) * 1987-03-31 1988-10-12 Nec Corp Automatic gain control circuit
JPH03107928A (en) * 1989-09-22 1991-05-08 Matsushita Electric Ind Co Ltd Acousto-optic element and its manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63245029A (en) * 1987-03-31 1988-10-12 Nec Corp Automatic gain control circuit
JPH03107928A (en) * 1989-09-22 1991-05-08 Matsushita Electric Ind Co Ltd Acousto-optic element and its manufacturing method

Also Published As

Publication number Publication date
JPS6212489B2 (en) 1987-03-19

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