In order to obtain a grating solution for high laser resolving power, a multilayer fused-silica reflection grating is described with a silver layer embedded in the groove in second-order Littrow configuration instead of first-order mounting. Efficiencies of 96.17% and 96.14% can diffracted in −2nd order for TE and TM polarizations, which are greater than 96%. The new multilayer reflection grating with a silver layer embedded has good incident characteristics and process tolerances. Therefore, the high-efficiency output with polarization-independent and wideband property characteristics of the grating will be well applied to the laser field.

中文翻译：

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二阶Littrow中与偏振无关的反射光栅，可实现较高的激光分辨能力

为了获得用于高激光分辨力的光栅解决方案，描述了一种多层熔融石英反射光栅，其中银层以二阶Littrow构造而不是一阶安装嵌入凹槽中。96.17％和96.14％的效率可以在TE和TM偏振的2阶衍射，大于96％。嵌入银层的新型多层反射光栅具有良好的入射特性和工艺公差。因此，具有偏振无关和光栅的宽带特性的高效输出将很好地应用于激光领域。