Design of a high-resolution rotating grating spectrometer
A high-resolution and wide-spectral Raman spectrometer based on a Czerny-Turner(C-T)optical configuration with a rotating grating was designed to address the trade-off between resolution and spectral coverage in grating spectrometers.The excitation wavelength was set at 532 nm,with a spectral range of 80～3 000 cm-1 with a resolution of 1.2 cm-1 The spectral range was divided into three bands:low(80～1 450 cm-1),medium(855～2 225 cm-1),and high(1 630～3 000 cm-1).Optimization was primarily focused on the medium band,while considering the entire frequency band.By fine-tuning the rotation angle of the grating,the low,medium,and high bands were all located on the effective image plane of the CCD detector.The point spread function,root-mean-square(RMS)wavefront error,and modulation transfer function(MTF)of the imaging system all met the design requirements.
NETL
NSTL
万方数据
维普
