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salehi borujeni S, nouroozi R. Inhomogeneity Estimation of a Waveguide Using Double-Pass Second Harmonic Generation. ICOP & ICPET _ INPC _ ICOFS 2014; 20 :393-396
URL: http://opsi.ir/article-1-189-en.html
URL: http://opsi.ir/article-1-189-en.html
1- Institute for Advanced Studies in Basic Sciences
Abstract: (5842 Views)
Second harmonic generation (SHG) can be used to estimate the nonlinear optical waveguide imperfection. In a periodically poled lithium niobate waveguide, if the quasi phasematching function is known this imperfection can be addressed to the inhomogeneity only. In this paper, using a mirror coated in the one end face of the waveguide to reflect both fundamental and SH waves, the inhomogeneity of the waveguide is obtained in a double-pass scheme. This is done without any information about the phase and using only the measured power of the SH wave.
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