Optically anisotropic crystalline grisms for astronomical spectrographs.
Optically anisotropic crystalline grisms for astronomical spectrographs.
复制标题
用于天文摄谱仪的光学各向异性晶体棱镜。
DOI：
10.1364/ao.37.001236
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发表时间：
1998
期刊：
影响因子：
1.9
通讯作者：
T. Sasaki
中科院分区：
文献类型：
--
作者：
N. Ebizuka;M. Iye;T. Sasaki
结果表明，晶体LiNbO(3)棱镜和由LiNbO(3)透射栅和硫化锌棱镜组成的混合棱镜是一种新型的高折射率色散元件，可用于可见光-近红外透射式天文光谱仪的高光谱分辨率。我们描述了这种用于光栅的光学各向异性晶体的基本原理和限制，以最小化由于其固有的双折射引起的光谱分离。
We show that a crystalline LiNbO(3) grism and a hybrid grism made of a LiNbO(3) transmission grating and a ZnS prism can be new and powerful dispersing elements with refractive indices high enough to realize high spectral resolution for visible to near-infrared astronomical spectrographs with transmission optics. We describe the basic principle and the limitation to minimizing the spectral separation that is due to the inherent birefringence of such an optically anisotropic crystal used for grisms.