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Intensity Correlation Time of a Single-Mode Laser Driven by Two Coloured Noises with Coloured Cross-Correlation with Bias Signal Modulation |
| CHEN Li-Mei1,2;CAO Li2,4;WU Da-Jin3,4 |
| 1Department of Physics, Shenzhen University, Shenzhen 518060
2State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
3Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
4CCAST (World Laboratory), PO Box 8730, Beijing 100080 |
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| Cite this article: |
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CHEN Li-Mei, CAO Li, WU Da-Jin 2005 Chin. Phys. Lett. 22 2500-2503 |
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Abstract The intensity correlation time T is studied by employing a gain-noise model of a single-mode laser driven by coloured pump noise τ1 and coloured quantum noise τ2 with coloured cross-correlation τ3 with a bias signal modulation. By using the linear approximation method, we detect that a maximum (i.e. resonance) exists in the curves of the intensity correlation time T versus the noise intensities D and Q when the noise correlation coefficient λ is positive; and a minimum (i.e. suppression) exists in the T-D and T-Q curves when λ is negative. When λ is zero, T increases monotonously with increase of D and decreases monotonically with increase of Q. Furthermore, the curve of T versus the pump noise self-correlation time τ1 is also studied. Our study shows that, no matter what the value of λ is, there exist one maximum and one minimum in the T-τ1 curve.
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| Keywords:
05.40.-a
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Published: 01 October 2005
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| PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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