The invention relates to a two-frequency laser interferometer with signal evaluation in accordance with the so-called heterodyne method. To be able to construct particularly small and rugged laser heads for such interferometers, two laser diodes which are operated at different operating points are ...
Meanwhile,the exact displacement of the CCD camera can be measured by a double-frequency laser interferometer,the needed coordinates of the feature points in the object plane and in the correlative i. 同时,用双频激光干涉仪测量CCD摄像机的移动距离,得到标定所需要的多个特征点在物面中的位置及在对应图...
18.Signal processing system of dual-frequency laser interferometer with two longitudinal modes based on AD8302基于AD8302的双纵模双频激光干涉仪信号处理系统 相关短句/例句 Double frequency signal双频信号 3)both ends signal双端信号 4)duplex signal双工信号 1.It uses the principle of negative resistance to...
Long-term drift laser frequency stabilization using purely optical reference We describe an apparatus for the stabilization of laser frequencies that prevents long-term frequency drifts. A Fabry–Perot interferometer is thermostated... A.,Rossi,V.,... - 《Review of Scientific Instruments》 被引量:...
14.Signal processing system of dual-frequency laser interferometer with two longitudinal modes based on AD8302基于AD8302的双纵模双频激光干涉仪信号处理系统 15.Design of Signal Components for Signal-oriented Automatic Test System面向信号自动测试系统信号组件的设计 16.Effects of distribution system on the ...
This new and innovative laser interferometer is ready to measure distance with no warmup at all. From its specially designed two-frequency laser and heterodyning techniques it derives increased sensitivity and resistance to air turbulence. With its internal computer it can smooth jittery readings, calc...
Let an atom traveling in the +z-direction with velocity νz be irradiated with a single-mode laser beam of photon energy ħω0 propagating either in the same or the opposite direction. The angular frequency ω± of the light that the moving atom feels is given at the first order by: ...
Beamsplitting prism and an F-P cavity sweep interferometer are utilized to achieve real-time frequency alignment which can monitor relative frequency shift and measure beat frequency simultaneously. A scheme of auto alignment through computer control is proposed in case of low laser frequency stability...
The purpose of this communication is to examine the feasibility of a method of diffracting the collimated monochromatic light of a laser by means of the diffraction spectrum of crossed objects having variable frequency, periodic amplitude or phase. By such means it is possible to move an intense ...
with the frequency-entangled photons and the TSSB states involving two sequentially distributed photons with different frequencies could be obtained within the PMI arms. Experimental results. Two-photon interference in polarization-based Michelson interferometer with tempo- rally separated photons. ...