Diffraction property of photorefractive volume grating in Ce:KNSBN for ordinarily polarized reading beam

2000 ◽  
Vol 45 (2) ◽  
pp. 145-149
Author(s):  
Baolai Liang ◽  
Zhaoqi Wang ◽  
Guoguang Mu ◽  
Jiuhong Guan ◽  
Rulian Fu
Keyword(s):  
Diffraction Property ◽  
Reading Beam

Diffraction property of volume grating in Ce:KNSBN with differently polarized reading beam

1999 ◽  
Author(s):  
Zhaoqi Wang ◽  
Baolai Liang ◽  
Guoguang Mu ◽  
Jiuhong Guan ◽  
Hongli Liu ◽  
...  
Keyword(s):  
Diffraction Property ◽  
Reading Beam

Application of the cepstrum method for processing iridology television signals

2021 ◽  
Author(s):  
Keyword(s):  
Dynamic Range ◽  
Video Signal ◽  
Signal Power ◽  
Television System ◽  
Digital Correction ◽  
Linear And Nonlinear ◽  
Reading Beam

The questions of the cepstrum method application for the processing of iridology television signals are considered. A cepstrum method for processing a delayed video signal of an aerospace television system is proposed. The application of the method greatly facilitates the determination of the delay and expands the dynamic range of the corrected signal. An expression for determining the power cepstrum at different apertures of the reading beam is received and a suboptimal model of an ideal corrector is designed. Keywords aperture correction; digital correction; linear and nonlinear correctors; cepstrum method; aperture; Gaussian aperture; exponential aperture; signal power cepstrum

Concept of Photorefractive Connection Module by Photorefractive Four-Wave Mixing with Extraordinary Writing Beams and an Ordinary Reading Beam

1999 ◽  
Vol 6 (3) ◽  
pp. 189-195 ◽  
Author(s):  
Atsushi Okamoto ◽  
Hisashi Matsuoka ◽  
Motoki Saito ◽  
Yoshihisa Takayama ◽  
Mototsugu Takamura
Keyword(s):  
Four Wave Mixing ◽  
Wave Mixing ◽  
Reading Beam

Transient interference gratings and holograms in dyed plastic

1984 ◽  
Vol 62 (7) ◽  
pp. 669-673
Author(s):  
Sergio Calixto ◽  
R. A. Lessard
Keyword(s):  
Real Time ◽  
Diffraction Efficiency ◽  
Laser Light ◽  
Thick Layer ◽  
Double Exposure ◽  
Naked Eye ◽  
Sufficient Intensity ◽  
Exposure Holography ◽  
Reading Beam ◽  
Made In

Transient diffraction gratings were holographically made in dyed plastic by absorbing laser light. Mean energy values of 40 mJ/cm2 absorbed in a 3-mm thick layer were needed to make gratings that lasted about 10 s. The writing beams and a reading one of different wavelength were simultaneously made to fall on the plastic: the reading beam was diffracted by the grating, which produced transient diffracted beams of sufficient intensity to be seen by the naked eye or to be stored permanently by conventional photographic methods. Curves showing diffraction efficiency versus exposure with grating frequency as a parameter are presented. Applications to real-time single and double exposure holography are also discussed.

Cross-polarized photorefractive four-wave mixing with extraordinary writing beams and an ordinary reading beam

1998 ◽  
Vol 37 (14) ◽  
pp. 2967 ◽  
Author(s):  
Yoshihisa Takayama ◽  
Atsushi Okamoto ◽  
Motoki Saito ◽  
Kunihiro Sato
Keyword(s):  
Four Wave Mixing ◽  
Wave Mixing ◽  
Reading Beam

scholarly journals Diffraction property of broadband metal multi-layer dielectric gratings based on rigorous coupled-wave analysis

2011 ◽  
Vol 60 (11) ◽  
pp. 114214
Author(s):  
Kong Wei-Jin ◽  
Wang Shu-Hao ◽  
Wei Shi-Jie ◽  
Yun Mao-Jin ◽  
Zhang Wen-Fei ◽  
...  
Keyword(s):  
Wave Analysis ◽  
Rigorous Coupled Wave Analysis ◽  
Dielectric Gratings ◽  
Diffraction Property ◽  
Rigorous Coupled Wave ◽  
Coupled Wave

Diffraction Property of Schmidt Prism Based on Unified Theory of Coherence and Polarization

2018 ◽  
Vol 55 (4) ◽  
pp. 040301
Author(s):  
孙雪平 Sun Xueping ◽  
刘卫国 Liu Weiguo ◽  
卢进军 Lu Jinjun
Keyword(s):  
Unified Theory ◽  
Diffraction Property

scholarly journals Kolakoski-(3, 1) Is a (Deformed) Model Set

2004 ◽  
Vol 47 (2) ◽  
pp. 168-190 ◽  
Author(s):  
Michael Baake ◽  
Bernd Sing
Keyword(s):  
Fixed Point ◽  
Pure Point ◽  
Generic Model ◽  
Diffraction Spectrum ◽  
Substitution Rule ◽  
Primitive Substitution ◽  
Diffraction Property ◽  
Model Set

AbstractUnlike the (classical) Kolakoski sequence on the alphabet {1, 2}, its analogue on {1, 3} can be related to a primitive substitution rule. Using this connection, we prove that the corresponding biin finite fixed point is a regular generic model set and thus has a pure point diffraction spectrum. The Kolakoski-(3, 1) sequence is then obtained as a deformation, without losing the pure point diffraction property.

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