QUASI-OPTICAL MIRRORS MADE BY A CONVENTIONAL MILLING MACHINE

被引:6
作者
BOUCHER, D
BURIE, J
BOCQUET, R
CHEN, WD
机构
[1] Laboratoire de Spectroscopie Hertzienne, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq
来源
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES | 1992年 / 13卷 / 09期
关键词
D O I
10.1007/BF01009996
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A modified method for machining off-axis mirrors has been described. By a careful choice of machine parameters, revolution surface can be generated with a sufficient accuracy for λ>15 μm. A large set of spherical, paraboloidal and ellipsoidal mirrors, whose focal lengths are comprised between 50 mm and 900 mm, have been machined using the method. Focal ratio improving the uppest limit expected by ERICKSON have been manufactured. These optical devices have essentially been used in the development of our far-infrared heterodyne spectrometer. Due to the rather low source power achievable in these kind of intruments the greatest care has to be taken in the design of optical lines. The whole system will be described in a separate paper. It will be seen that powers losses in beam propagation have reached very low absolute levels, rarely exceeding 1 or 2%. © 1992 Plenum Publishing Corporation.
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页码:1395 / 1402
页数:8
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