SYNOPSYS 光學(xué)設(shè)計(jì)軟件課程十三:帶有Kinoform鏡頭的激光擴(kuò)束器
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DT2uUf 在第11課中,您了解了如何使用普通球面透鏡設(shè)計(jì)激光擴(kuò)束器,并了解到需要多個(gè)透鏡元件才能獲得良好的性能。 第12課采用相同的設(shè)計(jì),使用兩個(gè)非球面元件,效果極佳。 本課程將證明您可以使用DOE(衍射光學(xué)元件)。 !]#@:Z 目標(biāo)是將腰半徑為0.35mm的HeNe激光器轉(zhuǎn)換成直徑為10mm且均勻至10%以內(nèi)的光束。 :`jB1rI 這是我們初始的輸入文件: ERka l7+ RLE ! Beginning of lens input file. 。 Z|t`}lK ID KINOFORM BEAM SHAPER z8VcV*6 WA1 .6328 ! Single wavelength <I
5F@pe' UNI MM ! Lens is in millimeters *P:!lO\| OBG .35 1 ! Gaussian object; waist radius -.35 mm; define full aperture = 1/e**2 point. As}3VBd 1 TH 22 ! Surface 2 is 22 mm from the waist . O%Hc%EfG 2 RD -2 TH 2 GTB S ! Guess some reasonable lens parameters; use glass type SF6 from Schott catalog
,>C`| SF6 >_3P6-L> 3 TH 20 ! Surface 3 is a kinoform on side 2 of the first element +mu.W
r 3 USS 16 ! Defined as Unusual Surface Shape 16 (simple DOE) Q
L 1e CWAV .6328 ! Zones are defined as one wave phase change at this wavelengt frh!dN
HIN 1.7988 55 ! Assume the zones are machined into the lens. You can also apply ! a film of a different index. ?R!?}7 RNORM 1 VoG_'P
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