| Original Articles |
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Influences of Modulated Noise on Normalized Intensity Fluctuation in a Single-Mode Laser |
| WANG Jun1,3;CAO Li1,2,3;WU Da-Jin2,3 |
| 1State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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WANG Jun, CAO Li, WU Da-Jin 2004 Chin. Phys. Lett. 21 246-249 |
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Abstract The influences of the two forms of modulated noises, i.e., the bias signal-modulated noise and the direct signal-modulated noise, on the normalized intensity fluctuation (NIF) are investigated, and the results of the two forms of modulation are compared detailedly. We find that a minimum for the case of the bias signal modulation appears in the curve of the dependence of the NIF upon the quantum and pump noise intensities when the correlation coefficient between the quantum noise and the pump noise is negative. However, the NIF for the case of the direct signal modulation is independent of the correlation coefficient between the two noises. Moreover, at the same parameter region, the NIF for the bias signal modulation is only one-eighth as much as that for the direct signal modulation.
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| Keywords:
05.40.-a
05.10.Gg
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Published: 01 February 2004
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| PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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05.10.Gg
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(Stochastic analysis methods)
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