منابع مشابه
Multiorder rotating grating interferometer.
A multichannel interferometer that uses a rotating grating to both disperse and Doppler shift an incident far-infrared laser beam is described. The laser beam is diffracted into a fan array of many (~ 10) beams that can be directed to probe the plasma along distinct chords. The phase-shift information is multiplexed in the frequency domain so that a single detector suffices to sense the recombi...
متن کاملSmart photogalvanic running-grating interferometer
Photogalvanic effect sPGEd or anomalous photovoltaic effect is a transport phenomenon producing high electric fields s,100 kV/cmd in ferroelectrics. PGE plays an important role in holographic-grating recording and was recently demonstrated for optical actuation and as high-voltage power supply. In this paper we demonstrate PGE generating highvoltage electrical pulses in atmosphere to apply this...
متن کاملTilt sensitivity of the two-grating interferometer.
Fringe formation in the two-grating interferometer is analyzed in the presence of a small parallelism error between the diffraction gratings assumed in the direction of grating shear. Our analysis shows that with partially coherent illumination, fringe contrast in the interference plane is reduced in the presence of nonzero grating tilt with the effect proportional to the grating tilt angle and...
متن کاملNumerical model of a multiple-grating interferometer
Received August 12, 1991; revised manuscript received March 31, 1992; accepted April 4, 1992 A numerical model of a multiple-grating interferometer is presented. The foundation of the model is an efficient algorithm that computes the propagation of a wave governed by the Helmholtz equation between two parallel planes in O(N log N) time, where N is the number of transverse sample points. The alg...
متن کاملDouble Grating Interferometer with Variable Lateral Shear
A modified Ronchi interferometer using two identical gratings is described. This instrument is very suitable for the measurement of small, zonal aberrations, since the shear can be changed continuously by rotating one grating with respect to the other, while the direction and magnitude of the tilt between the sheared wavefronts can be varied by adjusting the distances of the two gratings from t...
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ژورنال
عنوان ژورنال: Physical Review (Series I)
سال: 1910
ISSN: 1536-6065
DOI: 10.1103/physrevseriesi.31.591