Time evolution of the intensity correlation function in a single-mode laser driven by both the coloured pump noise with signal modulation and the quantum noise with cross-correlation between the real and imaginary parts
Cheng Qing-Hua (程庆华)ab, Cao Li (曹力)ac, Xu Da-Hai (徐大海)b, Wu Da-Jin (吴大进)ac
a State Key Laboratory of Laser Technology,Huazhong University of Science and Technology, Wuhan 430074, China; b School of Physics Science and Technology, Yangtze University, Jingzhou 434100, China;c Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
AbstractUsing the linear approximation, we have studied the time evolution of intensity correlation function C(t) in a single-mode laser driven by both the coloured pump noise with signal modulation and the quantum noise with cross-correlation between its real and imaginary parts. In the case of the pump noise with self-correlation time τ<<1, we find that the time evolution of C(t) varies with modulation signal frequency Ω, amplitude B and net gain a0. (i) As Ω increases, the time evolution of C(t) changes from monotonically descending to flat descending and finally to damply oscillating; (ii) as B increases, it changes from monotonically descending to maximal; (iii) as net gain a0 increases, it changes repeatedly from monotonically descending to monotonically ascending and to maximal, finally to monotonically descending again. However, in the case of τ>>1, the time evolution of C(t) only exhibits a form of damping oscillation.
Received: 12 July 2004
Revised: 19 February 2005
Accepted manuscript online:
PACS:
42.50.Lc
(Quantum fluctuations, quantum noise, and quantum jumps)
Fund: Project supported by the National Natural Science Foundation Of China(Grant No 10275025) and the Emphases Item of Education Office of Hubei Province China(Grant No 2003A001
Cite this article:
Cheng Qing-Hua (程庆华), Cao Li (曹力), Xu Da-Hai (徐大海), Wu Da-Jin (吴大进) Time evolution of the intensity correlation function in a single-mode laser driven by both the coloured pump noise with signal modulation and the quantum noise with cross-correlation between the real and imaginary parts 2005 Chinese Physics 14 1159
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