| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Coloured Conical Emission in BBO Crystal Pumped by Second Harmonic Femtosecond Pulses |
| BI Jie1,2, LI Yu-Hua1, YIN Juan-Juan1, LU Pei-Xiang1 |
| 1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 4300742School of Mathematics and Physics, China University of Geosciences, Wuhan 430074 |
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| Cite this article: |
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BI Jie, LI Yu-Hua, YIN Juan-Juan et al 2009 Chin. Phys. Lett. 26 014207 |
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Abstract Coloured conical emission (CCE) is investigated experimentally in a β-barium borate crystal excited by intense second harmonic femtosecond pulses. Contrary sequences of green and red conical emission with variable diameters are observed at different incidence angles, which is consistent with the calculation results based on the phase matching condition. As its broad range spectrum, CCE offers an alternative means to produce an ultrafast broadband light source. It is found that the spectrum of green CE shifts toward longer wavelengths as the length of BBO crystal increased. .
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| Keywords:
42.65.Ky
42.65.Re
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Received: 07 September 2008
Published: 24 December 2008
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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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