| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Effect of Air Gap on Dual-Tripler Broadband Third-Harmonic Generation |
HAN Wei, WANG Fang, WANG Li-Quan, JIA Huai-Ting, WANG Wei, LI Fu-Quan, FENG Bin, XIANG Yong, LI Ke-Yu, ZHONG Wei
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| Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 |
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| Cite this article: |
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HAN Wei, WANG Fang, WANG Li-Quan et al 2010 Chin. Phys. Lett. 27 024216 |
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Abstract We experimentally study the effect of the air gap on conversion efficiency and the spectrum of generated third-harmonic pulses in the dual-tripler broadband third-harmonic generation scheme. The experimental results are in good agreement with predictions that the 4-cm air gap is equivalent to a full cycle of phase mismatch among the three interacting pulses (i.e. the fundamental, second-harmonic and third-harmonic pulse). The experimental results also show that the spectrum of the third-harmonic pulse is sensitive to the air gap. We also point out that the air gap effect can be ignored when the dual-tripler system is located in 1000 Pa atmosphere. These results will guide the design of the broadband third-harmonic generation system in high power lasers.
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| Keywords:
42.65.Ky
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Received: 16 November 2009
Published: 08 February 2010
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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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