| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Broadband Asymmetric Conical Emission via Cascaded Second-Order Nonlinear Polarization during the Propagation of Femtosecond Laser Pulses in a BBO Crystal |
| WEN Jing, JIANG Hong-Bing**, YU Jing, YANG Hong, GONG Qi-Huang**
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| Department of Physics & State Key Laboratory for Mesoscopic Physics, Peking University, Beijing, 100871 |
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| Cite this article: |
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WEN Jing, JIANG Hong-Bing, YU Jing et al 2011 Chin. Phys. Lett. 28 064207 |
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Abstract We investigate the propagation of femtosecond laser pulses in a 5-mm-thick BBO crystal along the direction of type-I phase-matched second-harmonic generation. An intensity-asymmetric broadband conical emission (500–2000 nm) is demonstrated when a suitable chirp is introduced. It is generated by optical parametric amplification pumped by the second-harmonic light and seeded by the fundamental light which is broadened by cascaded nonlinear processes during second-harmonic generation.
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| Keywords:
42.65.Ky
42.65.Re
42.65.Yj
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Received: 05 March 2011
Published: 29 May 2011
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.65.Yj
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(Optical parametric oscillators and amplifiers)
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