Condition for the invariance of the spectral degree of coherence of a completely coherent light wave on weak scattering

2010 ◽  
Vol 35 (6) ◽  
pp. 847 ◽  
Author(s):  
Tao Wang ◽  
Daomu Zhao
Keyword(s):  
Light Wave ◽  
Coherent Light ◽  
Degree Of Coherence ◽  
Weak Scattering ◽  
Spectral Degree

Changes in the spectral degree of coherence of a light wave on scattering from a particulate medium

2016 ◽  
Vol 381 ◽  
pp. 210-213 ◽  
Author(s):  
Tao Wang ◽  
Hao Wu ◽  
Yi Ding ◽  
Xiaoling Ji ◽  
Daomu Zhao
Keyword(s):  
Light Wave ◽  
Degree Of Coherence ◽  
Spectral Degree ◽  
Particulate Medium

scholarly journals Physics Holographic Recording Device Based on LCoS Spatial Light Modulator

2011 ◽  
Vol 48 (5) ◽  
pp. 60-68 ◽  
Author(s):  
A. Bulanovs ◽  
E. Tamanis ◽  
I. Mihailova
Keyword(s):  
Spatial Light Modulator ◽  
Light Wave ◽  
Holographic Recording ◽  
Optical Scheme ◽  
Recording Device ◽  
Coherent Light ◽  
Light Modulator ◽  
Phase Wave ◽  
Diode Pumped ◽  
532 Nm

Physics Holographic Recording Device Based on LCoS Spatial Light ModulatorA PC-controlled holographic recording device has been developed in which a LC-R-2500 Spatial Light Modulator (SLM) based on reflective Liquid Crystal on Silicone (LCoS) display was used. The device allows the amplitude and phase modu-lation of coherent light wave fronts. In the optical scheme, a DPSS (Diode Pumped Solid State) laser with nanosecond pulse duration and wavelength 532 nm was applied. The holographic recording was made and tested in the amplitude and phase wave front modulation modes on a chalcogenide semiconductor photoresist As40S15S45. The experimental results are presented.

Q-switched partially coherent lasers with controllable spatial coherence

2021 ◽  
Vol 51 (2) ◽  
Author(s):  
Yushuang Wang ◽  
Xuanxuan Ji ◽  
Ziyang Chen ◽  
Jixiong Pu
Keyword(s):  
Laser Pulse ◽  
Spatial Coherence ◽  
Transverse Mode ◽  
Spatial Filter ◽  
Laser Resonator ◽  
Coherent Light ◽  
Partially Coherent ◽  
Partially Coherent Light ◽  
Degree Of Coherence ◽  
Output Laser

We develop a Q-switched degenerate laser, delivering a partially coherent light pulse of duration about 16 ns. The spatial coherence of the output laser pulse can be varied by tuning the spatial filter inside the laser resonator, and the oscillating transverse mode structure can be determined by measuring the degree of coherence of the output laser pulse. It is shown that the larger is the diameter of the spatial filter, the more are the oscillating transverse modes, and the lower is the degree of coherence. Based on coherent-mode representation for the partially coherent source, we can estimate the transverse mode contribution to the output partially coherent laser. The experimental results on suppressing speckle demonstrate that the generated partially coherent light possesses the characteristics of rapid reduction of spatial coherence, making it an ideal source for high-speed imaging and ranging applications.

Sign in / Sign up

Export Citation Format

Share Document