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has been cited by the following article:

• TITLE: Nonlinear Cascaded Femtosecond Third Harmonic Generation by Multi-grating Periodically Poled MgO-doped Lithium Niobate

  AUTHORS: Shuanggen Zhang, Wenchao You, Zhangchao Huang

  KEYWORDS: Femtosecond; Third Harmonic Generation; Second Harmonic Generation; Cascaded Nonlinear Process

  JOURNAL NAME: Optics and Photonics Journal, Vol.3 No.2B, July 18, 2013

  ABSTRACT: Nonlinear cascaded femtosecond third harmonic generation was experimentally investigated pumped by 100 fs pulses at optical communication band 1550 nm using a multi-grating 5 mol. % MgO-doped periodically poled lithium niobate crystal. The optimized efficiency of 10.8% was achieved with the simultaneous phase-matching of the second harmonic and sum frequency process. And the third harmonic spectrum reached as broad as 8.7 nm because of the choosing of a small group velocity mismatching between the fundamental and second harmonic pulses. Nonlinear cascaded method will provide a reference for the efficient frequency conversion in the high intensity range.