14 August 1998 Theoretical analysis of quasi-phase-matched second-harmonic generation in poled fiber
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Abstract
Recently high second-order nonlinearities were observed in glass fiber by a variety of techniques: thermal poling, corona poling, and electron implantation. This discovery suggested that the use of such a fiber may be as a practical frequency doubler, and as a suitable replacement for more traditional but expensive, nonlinear crystal. More recently, periodically patterned second order nonlinearities have been created in optical fibers by thermal poling in vacuo and cw quasi-phase- matched second harmonic generation to the blue has been demonstrated. In this article we will present a mould for QPM SHG in poled fiber. The analysis is based on the coupled-mode theory and the nonlinear coupled mode equations were derived to describe second harmonic generation in poled fiber with periodic (chi) (2), approximate solutions based on the no pump depletion approximation were given and discussed. The results are summarized in graphic data with normalized parameter. These results may be helpful in the design of practical fiber SHG devices.
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Shaohua Hou, Li Qin, Wenying Yang, Yushu Zhang, "Theoretical analysis of quasi-phase-matched second-harmonic generation in poled fiber", Proc. SPIE 3556, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications II, (14 August 1998); doi: 10.1117/12.318241; https://doi.org/10.1117/12.318241
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