The Pennsylvania State University, Department of Electrical Engineering, University Park, Pennsylvania 16802, USA.
Opt Lett. 2011 Jun 1;36(11):2023-5. doi: 10.1364/OL.36.002023.
We propose an optical spectrometer using a hybrid grating-Fresnel (G-Fresnel) diffractive optical element. Theoretical simulation shows that a spectral resolution of approximately 1 nm can be potentially achieved with a millimeter-sized G-Fresnel. A proof-of-concept G-Fresnel-based spectrometer with subnanometer spectral resolution is experimentally demonstrated. The proposed method provides a promising new way for realizing compact optical spectrometers.
我们提出了一种使用混合光栅-菲涅耳（G-Fresnel）衍射光学元件的光谱仪。理论模拟表明，使用毫米级的 G-Fresnel 可以实现约 1nm 的光谱分辨率。实验证明了具有亚纳米光谱分辨率的基于 G-Fresnel 的概念验证光谱仪。所提出的方法为实现紧凑的光学光谱仪提供了一种很有前途的新途径。
