| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Supercontinuum Gneneration and Modes Analysis in Secondary Cores of a Hollow-Core Photonic Crystal Fiber |
GUO Yuan1,2, RUAN Shuang-Chen1, YAN Pei-Guang1, LI Irene-Ling1, YU Yong-Qin1 |
| 1Shenzhen Key Laboratory of Laser Engineering, ShenzhenUniversity, Shenzhen 5180602Department of Physics, Taiyuan University of Technology, Taiyuan030024 |
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| Cite this article: |
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GUO Yuan, RUAN Shuang-Chen, YAN Pei-Guang et al 2010 Chin. Phys. Lett. 27 044212 |
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Abstract We demonstrate the generation of supercontinuum spectra in three secondary cores of a hollow-core photonic crystal fiber pumped by femtosecond laser pulses, respectively. The supercontinuum spectra are mainly a result of the soliton self-frequency shift and an amplification of dispersive wave at visible wavelengths. Detailed mode simulations show that with the increasing core length, the modes transfer from "double-points" to "single-point" since the pump laser is more easily coupled into the two side cores of a secondary core when the core length is small. The simulation results also explain why the experimental observed far-field beam patterns of first two secondary cores are different.
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| Keywords:
42.65.Dr
42.65.Ky
42.60.Jf
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Received: 04 December 2009
Published: 27 March 2010
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| PACS: |
42.65.Dr
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(Stimulated Raman scattering; CARS)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.60.Jf
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(Beam characteristics: profile, intensity, and power; spatial pattern formation)
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