我要設(shè)計(jì)一個(gè)激光擴(kuò)束鏡，要求正向使用（擴(kuò)束）和反向使用（縮束）時(shí)產(chǎn)生的像差相同。請(qǐng)問(wèn)采用什么樣的結(jié)構(gòu)才可以實(shí)現(xiàn)？ :=<0=JE#  
  最好是伽利略結(jié)構(gòu)的（無(wú)實(shí)焦點(diǎn)），實(shí)在不行的話也可以用開(kāi)普勒結(jié)構(gòu)。

用伽得俐略的系統(tǒng)是比較長(zhǎng)用的,這樣做的系統(tǒng)畢較短

There are lot, depending on your requirements. Anyway you can try: A]o4Mf0>I  
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1, Refractive: an achromatic as positive + plano-convex as negative; >&U@f  
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2, Reflective: two parabolic mirrors; .[:VSM7T  
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Both of them affer nice spherical aberration performance. qMP1k7uG)  
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Reminder: compute the laser beam density, ensure you have enough strong optical coating. BRS#Fl:  
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Good luck.

多謝。因?yàn)楹竺嬉�做干涉用，所以要求雙向的像差都小于0.1倍波長(zhǎng)。 LP];x3  
我用兩組小氣隙雙分透鏡得到了很好的結(jié)果，但是應(yīng)該如何保證雙分透鏡之間的氣隙的精度呢？zemax里面顯示這個(gè)氣隙的誤差必須小于0.01mm，幾乎不可能實(shí)現(xiàn)。 k@dN$O%p  
現(xiàn)在考慮用兩個(gè)雙膠合透鏡做，據(jù)說(shuō)激光對(duì)這種膠的損傷閾值比較低，不過(guò)幸好我這里用的激光也是比較弱的。 SaOYu &>  
哪位知道雙膠合透鏡上用的這種膠對(duì)應(yīng)1064nm激光的損傷閾值是多少？

Hi, q@t0NvNSu  
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The following is a link of technical data of optical adhesives, hope it be helpful: R\@/U=iqR  
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http://www.lienhe.com.cn/uvadh/NOA60.htm i0$Bx>  
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Double check from your lens vendor waht type of adhesive they use for your cemented doublet. 0Z[oKXm1p  
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It is OK to use the spaced doublet design as a backup, if so, please pay a lot attention on the opto-mechanical design and assembling. ydRC1~f0