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

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DOI: 10.4236/opj.2013.32B012    2,976 Downloads   4,260 Views   Citations

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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Zhang, W. You and Z. Huang, "Nonlinear Cascaded Femtosecond Third Harmonic Generation by Multi-grating Periodically Poled MgO-doped Lithium Niobate," Optics and Photonics Journal, Vol. 3 No. 2B, 2013, pp. 50-52. doi: 10.4236/opj.2013.32B012.

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