| Original Articles |
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Enhancement of Available Conversion Efficiency of Optical Parametric Amplifier in a Cascaded Photonic Crystal Structure |
| LI Wen-Hui;CHEN Li-Xue;TANG Dong-Hua;DING Wei-Qiang;LIU Shu-Tian |
| Department of Physics, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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LI Wen-Hui, CHEN Li-Xue, TANG Dong-Hua et al 2005 Chin. Phys. Lett. 22 2582-2584 |
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Abstract Using the cascaded structure of a linear and a second-order nonlinear photonic crystals, we realize a high-efficiency optical parametric amplifier in the case of exact phase matching. This proposal is verified using the slow-envelope nonlinear finite difference time domain numerical method. Compared with the case of the individual nonlinear photonic crystal structure, the oscillation threshold is decreased obviously, and the peak power amplification factor of the transmitted signal is enhanced more than 20 times.
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| Keywords:
42.65.Yj
42.65.Re
42.70.Mp
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Published: 01 October 2005
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| PACS: |
42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.70.Mp
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(Nonlinear optical crystals)
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