中翻英（六级未过者勿进）200字100分

Question

请将下列翻译为英文，为防止问题流产损失先给50，成后再加50，甚至更多，不食言。
“ 声光Q 开关是利用声光相互作用以控制光腔损耗的Q 开关技术。声光调Q 是通过电声转换形成超声波使调制介质折射率发生周期性变化, 对入射光起衍射作用, 使之发生衍射损耗,Q 值下降, 激光振荡不能形成，在很多领域得到广泛的应用。本文介绍了声光Q开关的工作原理，并讨论的是其中的一种广泛使用的Q 开关方式，既在光泵激励下其上能级反转粒子数不断积累并达到饱和值, 这时突然撤除超声场, 衍射效应立即消失,腔内Q 值猛增, 激光振荡迅速恢复, 其能量以巨脉冲形式输出。其主要优点是重复频率高，性能稳定可靠。”

光腔：Cavity 声光Q 开关：Acousto-optic Q switch 电声转换：Electro-acoustic conversion 超声波：Ultrasonic wave 调制：Modulation 介质Media 折射率：Refractive index 入射光： incident light 衍射：diffractive Q值：Q-value 振荡：surge 光泵 optical pump 上能级：upper state 反转粒子数：inversion
背景小知识：激光发射的场景是这样子的，激光振荡腔内有晶体，用一个泵浦光束照射穿过晶体，晶体的粒子就吸收光束能量跃升到高能级，然后当高能级的粒子大于低能级的粒子时，就形成粒子反转，激励光源一旦照射，高能级的粒子就会以雪崩式跃迁到低能级，并且放出能量就形成了激光。调Q就是控制激励光源的损耗（调Q值），使它达不到激励的水平，这样高能级的粒子就会越积越多（比不调Q多的多），在把Q值调回去，激励光激励，大量粒子就会雪崩式的跃迁到低能级，放出巨大能量形成激光脉冲。
第二三段为专业名词的英文备注。只需翻译双引号内的文字。

Answer 1

“Acousto-optic Q switch is a technology of control the cavity loss through interaction of sound and light. It can regulate the periodic change of Media’s refractive index through ultrasonic wave by electro-acoustic conversion. It also has a diffractive effect on refractive index. Lead to the failure of laser oscillation by diffractive loss and the drop of Q-value. So, Acousto-optic Q switch is widely used in many fields. This thesis analyzes the function of Acousto-optic Q switch and discusses one of the most widely used method of it. The optical pump can make the upper state inversion accumulate in a Max value. The diffractive effect would suddenly disappeared while cut the Ultrasonic. Meanwhile, the Q-value in the Intra-cavity sharply rise, laser oscillation rapidly recover and obtain the energy in the way of laser output pulses.Acousto-optic Q switch has the advantage of high repetition rate, reliability and stability.”

纯手工翻译，尽我所能了，楼主请给分。

Answer 2

Acousto-optic Q switch is used to control the interaction of sound and light loss optical cavity Q-switching technology. Acousto-optic Q-acoustic conversion through the formation of ultrasound to periodically modulated refractive index changes on the incident light from the diffraction effect and make a diffraction loss, Q value decreased, the laser oscillation can not form, in many fields is widely used . This article describes the acousto-optic Q switch works, and discussion is one of a widely used Q-switch mode, both in the optical pumping excitation on the level of its accumulation of particles and reverse saturation value, when suddenly removal of ultrasonic field, the diffraction effect immediately disappears, cavity Q values soared, the rapid recovery of laser oscillation, the energy in the form of giant pulse output. Its main advantage is the high repetition rate, stable performance and reliable

Answer 3

"Sound and Light Q switch is used to control the interaction of sound and light loss cavity Q-switching technology. Acousto-optic Q-transformation through the formation of electro-acoustic ultrasound to periodically modulated refractive index changes in the role of the incident light from the diffraction, so that The occurrence of diffraction loss, Q value decreased, the laser oscillation can not form, widespread in many fields of application. This article describes the acousto-optic Q switch works, and discussion is one of a widely used Q-switch mode, both in optical pumping excitation of its upper levels and reverse the accumulation of particles reach saturation value, then suddenly remove the ultrasonic field, the diffraction effect immediately disappears, cavity Q values soared, the rapid recovery of laser oscillation, the energy in the form of giant pulse output . The main advantage is the high repetition rate, stable and reliable performance. "

Cavity: Cavity acousto-optic Q switch: Acousto-optic Q switch electro-acoustic conversion: Electro-acoustic conversion Ultrasonic: Ultrasonic wave modulation: Modulation Media Media refractive index: Refractive index incident: incident light diffraction: diffractive Q value: Q-value Oscillation: surge level optical pumping optical pump on: upper state Inversion: inversion
Background Little Knowledge: laser emission scenario is like this, the laser oscillation cavity crystals irradiated with a pump beam through the crystal, the crystal particles on the absorption of beam energy jumped to the high energy level, and then when the energy level of the particles greater than low level of particles, the particles on the formation of reversal, encouraging light when irradiated with high energy particles will be to transition to a low level avalanche, and the release of energy on the formation of a laser. Q-is to control the excitation light source of loss (Q-value), to make it reach the level of incentives, such high energy particles will be piled up (more than non-Q-over), be transferred back in the Q value , excitation light excitation, a large number of particles will be avalanche-like transition to the low level, the tremendous energy released form of laser pulses.