scholarly journals Theoretical research of influence of laser intensity fluctuation on imaging quality degradation of coherent field

2017 ◽  
Vol 66 (24) ◽  
pp. 244202
Author(s):  
Cheng Zhi-Yuan ◽  
Ma Cai-Wen ◽  
Ma Qing
Keyword(s):  
Intensity Fluctuation ◽  
Laser Intensity ◽  
Theoretical Research ◽  
Imaging Quality ◽  
Quality Degradation ◽  
Coherent Field

Aerodynamic heating of the dome on imaging quality degradation of conformal optical systems

Optik ◽  
2014 ◽  
Vol 125 (24) ◽  
pp. 7120-7125 ◽  
Author(s):  
Wang Zhang ◽  
Fanyang Dang ◽  
Chenglong Hao ◽  
Zhigang Fan
Keyword(s):  
Optical Systems ◽  
Aerodynamic Heating ◽  
Imaging Quality ◽  
Quality Degradation

Suppression of laser intensity fluctuation in resonator optical gyro by a simple light intensity feedback technique

2020 ◽  
Vol 59 (03) ◽  
pp. 1
Author(s):  
Shihao Yin ◽  
Wenyao Liu ◽  
Enbo Xing ◽  
Ziwen Pan ◽  
Yu Tao ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Fluctuation ◽  
Laser Intensity

Joint influences of aerodynamic flow field and aerodynamic heating of the dome on imaging quality degradation of airborne optical systems

2012 ◽  
Vol 51 (36) ◽  
pp. 8625 ◽  
Author(s):  
Haosu Xiao ◽  
Baojun Zuo ◽  
Yi Tian ◽  
Wang Zhang ◽  
Chenglong Hao ◽  
...  
Keyword(s):  
Flow Field ◽  
Optical Systems ◽  
Aerodynamic Heating ◽  
Imaging Quality ◽  
Quality Degradation

scholarly journals Influence of Laser Intensity Fluctuation on Single-Cesium Atom Trapping Lifetime in a 1064-nm Microscopic Optical Tweezer

2020 ◽  
Vol 10 (2) ◽  
pp. 659
Author(s):  
Rui Sun ◽  
Xin Wang ◽  
Kong Zhang ◽  
Jun He ◽  
Junmin Wang
Keyword(s):  
Optical Tweezers ◽  
Intensity Fluctuation ◽  
Laser Intensity ◽  
Single Photon ◽  
Optical Tweezer ◽  
Optical Modulator ◽  
Quantum Bits ◽  
The Time Domain ◽  
The Impact ◽  
Coherent Manipulation

An optical tweezer composed of a strongly focused single-spatial-mode Gaussian beam of a red-detuned 1064-nm laser can confine a single-cesium (Cs) atom at the strongest point of the light intensity. We can use this for coherent manipulation of single-quantum bits and single-photon sources. The trapping lifetime of the atoms in the optical tweezers is very short due to the impact of the background atoms, the parametric heating of the optical tweezer and the residual thermal motion of the atoms. In this paper, we analyzed the influence of the background pressure, the trap frequency of optical tweezers and the laser intensity fluctuation of optical tweezers on the atomic trapping lifetime. Combined with the external feedback loop based on an acousto-optical modulator (AOM), the intensity fluctuation of the 1064-nm laser in the time domain was suppressed from ±3.360% to ±0.064%, and the suppression bandwidth in the frequency domain reached approximately 33 kHz. The trapping lifetime of a single-Cs atom in the microscopic optical tweezers was extended from 4.04 s to 6.34 s.

Comprehensive analysis of imaging quality degradation of an airborne optical system for aerodynamic flow field around the optical window

2013 ◽  
Vol 52 (33) ◽  
pp. 7889 ◽  
Author(s):  
Chenglong Hao ◽  
Shouqian Chen ◽  
Wang Zhang ◽  
Jinhan Ren ◽  
Chong Li ◽  
...  
Keyword(s):  
Flow Field ◽  
Optical System ◽  
Comprehensive Analysis ◽  
Optical Window ◽  
Imaging Quality ◽  
Quality Degradation

scholarly journals Improving coherent field imaging quality by suppressing the influence of transmitting aperture spacing error

2015 ◽  
Vol 64 (12) ◽  
pp. 124203
Author(s):  
Cheng Zhi-Yuan ◽  
Ma Cai-Wen ◽  
Luo Xiu-Juan ◽  
Zhang Yu ◽  
Zhu Xiang-Ping ◽  
...  
Keyword(s):  
Imaging Quality ◽  
Coherent Field ◽  
Field Imaging

Investigation on Influence of Laser Intensity Fluctuation on Beam Cleanup System Based on Stochastic Parallel Gradient Descent Algorithm

2010 ◽  
Vol 30 (5) ◽  
pp. 1396-1401
Author(s):  
王小林 Wang Xiaolin ◽  
王三宏 Wang Sanhong ◽  
周朴 Zhou Pu ◽  
马浩统 Ma Haotong ◽  
马阎星 Ma Yanxing ◽  
...  
Keyword(s):  
Gradient Descent ◽  
Intensity Fluctuation ◽  
Laser Intensity ◽  
Descent Algorithm ◽  
Gradient Descent Algorithm ◽  
Stochastic Parallel Gradient Descent

Influence of aerodynamic optics on the imaging quality degradation of an high-speed aircraft

2018 ◽  
Author(s):  
Shouqian Chen ◽  
Rongda Zhang ◽  
Yue Ming ◽  
Lin Ju ◽  
Baofeng Cao ◽  
...  
Keyword(s):  
High Speed ◽  
Imaging Quality ◽  
Quality Degradation

Influence of altitude on aero-optic imaging quality degradation of the hemispherical optical dome

2019 ◽  
Vol 58 (2) ◽  
pp. 274 ◽  
Author(s):  
Hui Wang ◽  
Shouqian Chen ◽  
HuaJun Du ◽  
Fanyang Dang ◽  
Lin Ju ◽  
...  
Keyword(s):  
Imaging Quality ◽  
Quality Degradation

scholarly journals The molecular size and shape of liver glycogen

1977 ◽  
Vol 163 (2) ◽  
pp. 201-209 ◽  
Author(s):  
R Geddes ◽  
J D Harvey ◽  
P R Wills
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Diffusion Coefficients ◽  
Intensity Fluctuation ◽  
Laser Intensity ◽  
Molecular Size ◽  
Liver Glycogen ◽  
Sedimentation Rates ◽  
Hydrodynamic Behaviour

The molecular-weight distribution of liver glycogen has been established from the analysis of sedimentation rates of fractions separated on sucrose density gradients and from the direct measurement of the diffusion coefficients of these fractions by laser-intensity-fluctuation spectroscopy. Hydrodynamic studies indicated that all fractions of glycogen of mol.wt.exceeding 25x10(6) had about 1.1 g of water per g of polysaccharide associated with them. The hydration and hydrodynamic behaviour of all fractions of mol.wt. exceeding 25x10(6) was similar, whereas smaller fractions behaved anomalously, indicating a substantially different overall structure.

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