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Application of potassium fluoroboryryllium group crystal material and acousto-optic device

A technology of potassium fluoroboronate and potassium boronate family, which is applied in the field of potassium fluoroboronate family crystal materials and acousto-optic devices, can solve the problem of large band gap and can not meet the needs of high acousto-optical conversion efficiency of acousto-optic devices , low acousto-optical conversion efficiency of acousto-optic devices, etc., to achieve the effect of high acousto-optical conversion efficiency

Active Publication Date: 2019-05-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing acousto-optic media used in acousto-optic devices cannot meet the growing demand for high acousto-optic conversion efficiency of acousto-optic devices.
Especially, for existing acousto-optic media that can transmit ultraviolet light (especially deep ultraviolet light), because of their relatively large band gap, their refractive index for ultraviolet light is often relatively small, so the acousto-optic medium The quality factor of the medium is often relatively low, and correspondingly, the acousto-optic conversion efficiency of the acousto-optic device that can be applied in the ultraviolet band is low

Method used

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  • Application of potassium fluoroboryryllium group crystal material and acousto-optic device
  • Application of potassium fluoroboryryllium group crystal material and acousto-optic device
  • Application of potassium fluoroboryryllium group crystal material and acousto-optic device

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Embodiment 1

[0020] Acousto-optic devices have very wide applications in many fields of science, engineering and technology. For the acousto-optic medium in the acousto-optic device, the quality factor is an important parameter that characterizes the acousto-optic interaction of the acousto-optic medium. Currently, the commonly used quality factors are mainly as follows:

[0021]

[0022]

[0023]

[0024] Among them, M 1 , M 2 , M 3 Is the quality factor of the acousto-optic medium to light waves with specific wavelengths; n is the refractive index of the acousto-optic medium to light waves of specific wavelengths; P eff Is the effective elastic-optical coefficient of the acousto-optic medium; ρ is the density of the acousto-optic medium; v is the propagation velocity of the sound wave in a specific direction along the acousto-optic medium.

[0025] It can be seen that for acousto-optic media, its quality factor for light waves of a specific wavelength is related to the refractive index n of...

Embodiment 2

[0034] figure 1 It is a schematic structural diagram of an acousto-optic device provided in the second embodiment of the present invention. See figure 1 , The acousto-optic device 10 includes:

[0035] The sound wave generating device 101 is used to generate a sound wave of a set frequency and propagate in the acousto-optic medium 102;

[0036] The acousto-optic medium 102 is a KBBF crystal material, which is used to generate acousto-optic diffraction under the action of acoustic waves and incoming ultraviolet light;

[0037] Wherein, the direction in which the acoustic wave generated by the acousto-optic device 10 provided in this embodiment enters the acousto-optic medium 102 is: the c-axis direction of the KBBF group crystal; the direction in which ultraviolet light enters the acousto-optic medium is perpendicular to the c-axis direction .

[0038] Preferably, the ultraviolet light is deep ultraviolet light; wherein, the deep ultraviolet light is ultraviolet light with a wavelengt...

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Abstract

The invention discloses use of KBBF-group crystal materials including KBBF, RBBF and CBBF and an acousto-optical device. The KBBF-group crystal materials are used as acousto-optic medium in the acousto-optical device. Ultraviolet light is transmitted into the acousto-optic medium. Sound waves are transmitted into the acousto-optic medium by the acousto-optic device in the direction of the c axis of KBBF-group crystals. The direction in which the ultraviolet light is transmitted into the acousto-optical medium is perpendicular to the c axis. In this way, intensity of acousto-optic coupling of ultraviolet wave bands, especially deep ultraviolet wave bands, can be improved and acousto-optic conversion efficiency of the acousto-optical device is increased.

Description

Technical field [0001] The present invention relates to the field of acousto-optic technology, in particular to the use of a fluoroborylberylate potassium group crystal material and an acousto-optic device. Background technique [0002] When sound waves and light waves irradiate the acousto-optic medium at the same time, there will be an interaction between the sound waves and the light waves. The most significant phenomenon of acousto-optic interaction is that the acousto-optic medium disturbed by sound waves will diffract light. This phenomenon is called acousto-optic effect. Under the action of sound waves, the acousto-optic medium deflects the propagation direction of the beam, and the sound waves can be used to modulate the intensity and frequency of the beam. The use of acousto-optic effects to control laser beams has a wide range of applications for laser modulation, such as optical modulators, beam deflection, optical information processing, and spectrum analysis. For a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/11
CPCG02F1/11
Inventor 林哲帅姜兴兴罗思扬李伟吴以成陈创天
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI