發(fā)布時(shí)間：2018-05-10 09:41

  本文選題：激光器 + 二維變焦整形�。� 參考：《強(qiáng)激光與粒子束》2017年07期

【摘要】：為實(shí)現(xiàn)激光束形狀的二維整形,同時(shí)靈活適應(yīng)入射光束發(fā)散角、尺寸等參數(shù)的變化,提高光束質(zhì)量,提出了一種適用于大長(zhǎng)寬比、變發(fā)散角的激光束二維變焦整形方法。該方法利用光線變換矩陣方法分析光路,采用柱透鏡、球透鏡對(duì)光束進(jìn)行二維變焦整形,通過(guò)鏡片位置和間距的動(dòng)態(tài)調(diào)節(jié),實(shí)現(xiàn)對(duì)光束在x,y兩個(gè)維度上的尺寸、發(fā)散角共四個(gè)參數(shù)各自獨(dú)立的調(diào)整,實(shí)時(shí)校正激光束的低階像差,使出射光束始終保持為預(yù)定狀態(tài)。試驗(yàn)研究表明,該方法具有光路結(jié)構(gòu)簡(jiǎn)單、綜合像差小、調(diào)節(jié)范圍大等優(yōu)點(diǎn),能夠顯著改善高功率激光器的光束質(zhì)量,尤其適用于具有大長(zhǎng)寬比增益區(qū)的板條激光器和化學(xué)激光器的輸出光束整形。
[Abstract]:In order to realize two dimensional shaping of laser beam shape, adapt to the variation of divergence angle and size of incident beam and improve beam quality, a new method of laser beam zoom shaping with large aspect ratio and variable divergence angle is proposed. In this method, the light path is analyzed by means of ray transformation matrix, and the beam is shaped by cylindrical lens and spherical lens. By adjusting the position and spacing of the lens dynamically, the size of the beam in the two dimensions of XY is realized. The four parameters of the divergence angle are adjusted independently and the low order aberrations of the laser beam are corrected in real time so that the outgoing beam is always in a predetermined state. The experimental results show that this method has the advantages of simple optical structure, small comprehensive aberration and large adjusting range, and can improve the beam quality of high power laser. It is especially suitable for beam shaping of slab laser and chemical laser with large gain range of aspect ratio.
【作者單位】： 中國(guó)船舶重工集團(tuán)公司第七一八研究所;空軍駐長(zhǎng)春地區(qū)軍事代表室;
【基金】：國(guó)家高技術(shù)發(fā)展計(jì)劃項(xiàng)目
【分類號(hào)】：TN24

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本文編號(hào)：1868802