Development of high-dispersion grisms and immersion gratings for spectrographs of the Subaru Telescope
Development of high-dispersion grisms and immersion gratings for spectrographs of the Subaru Telescope
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开发用于斯巴鲁望远镜光谱仪的高色散光栅和浸没光栅
DOI：
10.1117/12.316818
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
M. Wakaki
中科院分区：
文献类型：
--
作者：
N. Ebizuka;M. Iye;T. Sasaki;M. Wakaki
我们表明，晶体铌酸锂（LiNbO3：LN）棱镜和混合棱镜制成的LN透射光栅和硫化锌（ZnS）棱镜，尽管它们的双折射特性，可用作新的和强大的高折射率的色散元件，以实现高光谱分辨率的光学近红外天文光谱仪与传输光学。我们还介绍了用高折射率材料和深槽制作光栅和浸没光栅的新方法。
We show that a crystalline lithium niobate (LiNbO3 : LN) grism and a hybrid grism made of a LN transmission grating and a zinc sulfide (ZnS) prism, in spite of their birefringent properties, can be used as new and powerful dispersing elements with high refractive indices to realize high spectral resolution for optical to near infrared astronomical spectrograph with transmission optics. We also show new fabricating methods for grisms and immersion gratings with high index material and deep grooves.