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Chin. Opt. Lett.
 Home  List of Issues    Issue 01 , Vol. 04 , 2006    Stochastic resonance for signal-modulated pump noise in a single-mode laser


Stochastic resonance for signal-modulated pump noise in a single-mode laser
Liangying Zhang1, Li Cao2, Fahui Zhu1
1Department of Physics, [Xiangfan University], Xiangfan 441053
2State Key Laboratory of Laser Technology, [Huazhong University of Science and Technology], Wuhan 430074

Chin. Opt. Lett., 2006, 04(01): pp.30-32-3

DOI:
Topic:Lasers and laser optics
Keywords(OCIS Code): 000.5490  140.3430  270.2500  

Abstract
By adopting the gain-noise model of the single-mode laser in which with bias and periodical signals serve as inputs, combining with the effect of coloured pump noise, we use the linear approximation method to calculate the power spectrum and signal-to-noise ratio (SNR) of the laser intensity under the condition of pump noise and quantum noise cross-related in the form of 'delta' function. It is found that with the change of pump noise correlation time, both SNR and the output power will occur stochastic resonance (SR). If the bias signal 'alpha' is very small, changing the intensities of pump noise and quantum noise respectively does not lead to the appearance of SR in the SNR; while 'alpha' increases to a certain number, SR appears.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2005/4/1
Accepted:
Posted online:

Get Citation: Liangying Zhang, Li Cao, Fahui Zhu, "Stochastic resonance for signal-modulated pump noise in a single-mode laser," Chin. Opt. Lett. 04(01), 30-32-3(2006)

Note: This work was supported by the National Natural Science Foundation of China (No. 10275025) and Xiangfan University Natural Science Foundation. L. Zhang's e-mail address is ly850@sohu.com.



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