Title

多级声光衍射相互作用长度的实验研究

Translated Titles

Experimental research on the interaction length of multi-order acousto-optic diffraction

Authors

顾华东;中国科学院苏州生物医学研究所;顾华东;邵中兴;杨杰;郑陈琪;陈瑞涛;武晓东;中国科学院苏州生物医学研究所,江苏 苏州215163; 江苏省医用光学重点研究室,江苏 苏州215163;中国科学院苏州生物医学研究所,江苏 苏州,215163

Key Words

多级声光衍射 ; 拉曼-奈斯 ; 作用长度 ; 衍射效率 ; 光电技术与系统 ; multi-order acousto-optic diffraction ; Raman-Nath ; interaction length ; diffractive efficiency

PublicationName

激光與紅外

Volume or Term/Year and Month of Publication

44卷3期(2014 / 05 / 06)

Page #

277 - 279

Content Language

簡體中文

Chinese Abstract

实验研究了多级声光衍射条件下的最佳声光相互作用长度与声波和光波之间的定量关系。测量结果表明最佳声光相互作用长度与声频紧密相关而几乎与入射光波长及强度无关。实验结果发现当声频低时,相互作用长度短,声频在9 MHz 左右,相互作用长度约为8 mm,当声频降低为6 MHz左右时,相互作用长度约为4 mm。设计了以纯水为介质的声光Q开关器件,在超声频率9 MHz,声功率3.4 W的条件下实现了约98%的总衍射效率。

English Abstract

The experimental investigation on the interaction length for getting the optimum diffraction of the multi-order acousto-optic diffraction is introduced.Measurement results show that best acousto-optic interaction length is closely related to audio frequency,and it is not almost relate to the wavelength and power of the light.When audio frequency is lower,the interaction length became shorter.As audio frequency is about 9MHz,the interaction length is about 8mm,it shrinks to about 4mm at 6MHz of audio frequency.An acousto-optic Q-switch apparatus working with pure wa-ter is designed,and a total diffractive efficiency of about 98%is obtained under the condition of acoustic frequency at 9MHz and acoustic power at 3.4W.

Topic Category 基礎與應用科學 > 物理
工程學 > 電機工程