Optical materials for near infrared Wollaston prisms

Optical materials for near infrared Wollaston prisms
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近红外沃拉斯顿棱镜用光学材料

DOI:
10.1051/aas:1997311
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发表时间:
1997
期刊:
Astronomy & Astrophysics Supplement Series
影响因子:
--
通讯作者:
M. Ciofini
M. Ciofini
中科院分区:
--
文献类型:
--
作者:
E. Oliva;S. Gennari;L. Vanzi;A. Caruso;M. Ciofini

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分析了近红外(0:9 2:5 m)传输的双折射材料的光学特性。沃拉斯顿棱镜具有较大的光束分离度并且几乎没有横向色差{例如视野 > 1 arcmin,图像伸长率 3c m 1 )b 超过 2.25m。当晶体冷却时,吸收率不会显着降低,因此 CaCO3 不应用于工作距离超过 2.0 m 的仪器。
The optical characteristics of birefringent ma- terials transmitting in the near IR (0:9 2:5 m) are an- alyzed. Wollaston prisms with large beam separation and virtually free from lateral chromatism { e.g. with elds of view > 1 arcmin and image elongation 3c m 1 )b eyond 2.25m. The ab- sorption does not decrease signicantly when the crystals is cooled, CaCO3 should not be therefore used in instru- ments working beyond 2.0 m.