沟槽光谱法标定λ/4波片

The method of calibration quarterwave plate with channeled spectrum

利用波片的多次反射理论，通过分光计观察沟槽光谱来精确地测量λ／４波片所对应的波长λ０，在可见光光谱范围内，其精度优于１ｎｍ。

Using the result of multiple reflexions in a waveplate,the wavelength λ0 for which the plate is a quarterwave plate can be measured by using a spectrometer to observe the channeled spectrm.It can be found to with the precision in 1nm in visible spectral range.