Author Affiliations
Abstract
Department of Physics, Anhui Normal University, Wuhu 241000
A new theoretical method with generality is proposed to study the statistical properties of the speckle phase. The general expression of the standard deviation of the speckle phase about the first-order statistics is derived according to the relation between the phase and the complex speckle amplitude. The statistical properties of the speckle phase have been studied in the diffraction fields with this new theoretical method.
散斑 相位统计性质 030.6140 Speckle 000.5490 Probability theory, stochastic processes, and statistics Chinese Optics Letters
2009, 7(1): 0105
Author Affiliations
Abstract
1 School of Physical and Technology, Yangtze University, Jingzhou 434023
2 State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
3 Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
Using linear approximation method, we calculate the intensity correlation time of a single-mode laser driven by both colored pump noise with signal modulation and the quantum noise with cross-correlation between its real and imaginary parts, and analyze the influence of the net gain coefficient a0 on the statistical fluctuation of the laser system. It is found that for the case that the colored pump noise is long time correlated, the main factor influencing the statistical fluctuation of the laser system is a0, and the frequency of the modulation signal has negligible effect on the statistical fluctuation of the laser system.
000.5490 Probability theory, stochastic processes, and statistics 140.3430 Laser theory 270.2500 Fluctuations, relaxations, and noise Chinese Optics Letters
2006, 4(7): 401
