Application of high power polarizing spectroscopic prism in laser interferometer

Since the laser light source was put into the market, prisms have been developing and improving in the laser market, and their application has become more and more common. Now let's take a look at the basic elements of the specific application of high-power polarization beam splitting prisms in the laser dry instrument

the premise is that the purpose of the high-power polarization splitting prism is to separate the transverse and longitudinal polarization regions of a beam of light, in which the p-polarized light passes through completely, while the s-polarized light is scattered at an included angle of 45, and the outgoing direction forms a straight included angle with the p-light. The transmittance ratio of P light to s light exceeds 1000. In addition, the transmittance of P light is guaranteed to be more than 90%. It has the characteristics of low stress, high extinction ratio, good imaging quality and small aperture deflection angle. The polarizing beam splitting prism is formed by connecting two high-precision 90 ° angle prisms. Next

considering that the laser has outstanding temporal coherence, and its coherence interval can reach several kilometers, since the laser was put into the market, the laser dry instrument with laser as the light source has always been valued by enterprises. The number of its users has continued to increase, and the technology of laser dry instrument has also made rapid progress, showing the laser dry instrument with various structures. Even though various types of laser interferometers are produced, in terms of mechanism, they can also be classified into two types: single frequency laser interferometer and heterodyne laser interferometer

the Machelson interferometer system is selected as the single frequency laser interferometer mechanism for spacing survey. The spectrometer BS divides the laser into two sections, one for the fixed mirror R and the other for the moving mirror M. When the moving mirror m rotates, the refracted light passing through R and M converges at o to form interference. According to the superposition frequency shift property of the spectroscope film. The phase difference of the signals carried by the photodetectors D1 and D2 is 90 °, which is used as the angle resolution of the counter

the key operation of the polarizing beam splitting prism is the error correction instrument for CNC machine tools, including various optical instruments for polarization initiation or detection. The high-power polarizing beam splitting prism produced here has the advantages of high-quality extinction ratio, low stress, strong polarization maintaining function and low cost. We sincerely invite you to call us for details