我要设计一个激光扩束镜,要求正向使用(扩束)和反向使用(缩束)时产生的像差相同。请问采用什么样的结构才可以实现? gw v
s 最好是伽利略结构的(无实焦点),实在不行的话也可以用开普勒结构。
kmlfp53
2007-01-28 15:19
用伽得俐略的系统是比较长用的,这样做的系统毕较短
mang2004
2007-01-29 07:18
There are lot, depending on your requirements. Anyway you can try: #'oGtFCd` 6@geakq 1, Refractive: an achromatic as positive + plano-convex as negative; ^U]B&+m OR C *U,$8j|} 2, Reflective: two parabolic mirrors; ^mCKRWOP' Gq9pJ Both of them affer nice spherical aberration performance. \"?5CHz* MXGz_Db4' Reminder: compute the laser beam density, ensure you have enough strong optical coating. /}#@uC .{
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%C4q9 Good luck.
mywing
2007-01-29 15:48
多谢。因为后面要做干涉用,所以要求双向的像差都小于0.1倍波长。 y:ad%,. C 我用两组小气隙双分透镜得到了很好的结果,但是应该如何保证双分透镜之间的气隙的精度呢?zemax里面显示这个气隙的误差必须小于0.01mm,几乎不可能实现。 KBy*QA 现在考虑用两个双胶合透镜做,据说激光对这种胶的损伤阈值比较低,不过幸好我这里用的激光也是比较弱的。 2mfKy9QxO 哪位知道双胶合透镜上用的这种胶对应1064nm激光的损伤阈值是多少?
mang2004
2007-01-29 19:54
Hi, ,7mB`0j> k*uLjU The following is a link of technical data of optical adhesives, hope it be helpful: 0m
7_#g4$L ]@9ZUtU,;N http://www.lienhe.com.cn/uvadh/NOA60.htm t @vb3 IJ#+"(?7,u Double check from your lens vendor waht type of adhesive they use for your cemented doublet. v2;'F RA$q{$arb 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. Z[?zaQ$ 8q_"aa,` Again, good luck.