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Optical Engineering

Femtosecond cascaded third-harmonic generation with simultaneous walk-off effect by multigrating periodically poled MgO-doped lithium niobate
Author(s): Wenchao You; Shuanggen Zhang; Xiurong Ma; Qingyue Wang
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Paper Abstract

The explicit formula solutions of cascaded third-harmonic generation (THG) process were derived based on coupled-wave equations. Conversion efficiency (CE) with the simultaneous temporal walk-off effect is theoretically investigated by use of split-step Fourier transform method, and the obtained results show that the CE of cascaded THG can be adjusted by phase mismatch, i.e., Δk SHG and Δk THG . The walk-off effect can be eliminated to some extent by optimizing pump intensity. Using the multiple-grating periodically poled MgO-doped lithium niobate (MgO: PPLN), pumped by 50 fs optical parametric amplifier pulses, the CE of the cascaded THG was achieved (10.8%), and a detailed analysis was presented.

Paper Details

Date Published: 28 May 2014
PDF: 6 pages
Opt. Eng. 53(5) 056119 doi: 10.1117/1.OE.53.5.056119
Published in: Optical Engineering Volume 53, Issue 5
Show Author Affiliations
Wenchao You, Tianjin Univ. of Technology (China)
Shuanggen Zhang, Tianjin Univ. of Technology (China)
Tianjin Univ. (China)
Xiurong Ma, Tianjin Univ. of Technology (China)
Qingyue Wang, Tianjin Univ. (China)

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