[求助]一個(gè)激光擴(kuò)束鏡的設(shè)計(jì) [復(fù)制鏈接]

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)問采用什么樣的結(jié)構(gòu)才可以實(shí)現(xiàn)？ a>jI_)L  
  最好是伽利略結(jié)構(gòu)的（無實(shí)焦點(diǎn)），實(shí)在不行的話也可以用開普勒結(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: 2o}G<7r  
, p=8tf#  
1, Refractive: an achromatic as positive + plano-convex as negative; ^* v{t?u  
OR q@Yt`$VTN  
2, Reflective: two parabolic mirrors; }u
j'BO2?  
QN8Hz/}\  
Both of them affer nice spherical aberration performance. naCI55Wx  
{%~Ec4r  
Reminder: compute the laser beam density, ensure you have enough strong optical coating. s31_3?Vdf,  
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