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Acousto-optic device for ceramic material acoustic absorption

A technology of acousto-optic devices and ceramic materials, which is applied in optics, instruments, nonlinear optics, etc., can solve the problems that the application and research of ceramic materials have not yet been reported, and achieve the effect of good sound absorption, mature manufacturing process and stable performance

Active Publication Date: 2008-10-22
CHINA ELECTRONICS TECH GRP NO 26 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, there are no reports on the application and research of ceramic materials in acousto-optic devices.

Method used

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  • Acousto-optic device for ceramic material acoustic absorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Aluminum nitride ceramic sheet (thickness 0.4mm) is used as sound-absorbing material in acousto-optic Q consecration, and 504 glue is used as adhesive. When the radio frequency power is 50W, the reflected wave is almost zero. With the 50W continuous laser switched off, an average power of 40W was obtained. Under the same test conditions, the acousto-optic Q switch without the aluminum nitride ceramic sheet for sound absorption only got an average power of 30W. Therefore, the performance of this sound-absorbing measure is stable, the effect is remarkable, and the average power and Q-switching effect of the acousto-optic Q-switch are obviously improved, and it can be widely used in acousto-optic devices. The difference from Example 1 is that the same effect can also be achieved by using silicon carbide or boron nitride tiles (thickness 0.3mm-1mm) as the sound-absorbing material.

[0022] With the present invention, when the ultrasonic wave is transmitted to th...

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Abstract

The invention discloses a acousto-optic device which use ceramic material absorb the sound, which includes transducer, acousto-optical interaction medium, reflector and correction block, Its characteristics are that the adhesive bonding adhere ceramic absorption on the reflector of acousto-optic mutual function medium. The invention used the characteristic of good adsorption effect of boron nitride stupalith, no spare reflection sound wave, and the litter difference of media between thermal expansion coefficient and acousto-optical interaction, The application of acousto-optic devices, even if the use of environmental temperature is too large , or after ceramic material absorb sound waves into heat there is no time to disperse caused too much temperature rise, it will not cause the Reflector rupture of acousto-optic interaction medium; It also reduces manufacturing costs.

Description

technical field [0001] The invention relates to an acousto-optic device using ceramic materials to absorb and reflect sound waves, in particular to the invention of applying silicon carbide, aluminum nitride and boron nitride ceramic materials to the acousto-optic device. Background technique [0002] Acousto-optic devices are used more and more widely as important components of laser products such as laser phototypesetting machines, laser scribing machines and laser marking machines. In the prior art, especially medium and high-power acousto-optic devices, such as the acousto-optic Q switch, due to the high radio frequency power and the many reflected sound waves, certain technologies must be adopted to eliminate the reflected sound waves and prevent harmful acousto-optic interactions between the reflected sound waves and the laser. Function, reduce the average output power after Q-switching, and damage the Q-switching effect of the laser. At present, metal materials such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/11C04B35/565C04B35/581C04B35/583
Inventor 张泽红
Owner CHINA ELECTRONICS TECH GRP NO 26 RES INST