Research Of A New Spectrometer Based On A Wollaston Prism Array

As a remote sensing and detect device,the interference spectrometer is very useful in scientific research,environmental monitor,etc.Compared with dispersive spectrometer,it has advantages of high throughput and multi-channel.This technology is classified in two species:Temporarily Modulated Interferometer(TMII)and Spatially Modulated Interferometer(SMII).Contrast to TMII,the SMII is more stable,simple and compact.In this research field how to improve spectral resolution and optical throughput is always the focus points.Firstly,the development history and principle of interference spectrometer were introduced in this paper.Then experimental system was set up separately with single and two Wollaston prisms.The spectrum of the laser source was acquired.The experimental results proved that the system consisted of double Wollaston prisms has higher spectral resolution and optical throughput than that of the single Wollaston prism. The optical throughput and the modulation depth of the system were analyzed as well.