Advances in the measurement of the poled silica nonlinear profile

Alice C. Liu; Michel J. F. Digonnet; Gordon S. Kino; Emile J. Knystautas

doi:10.1117/12.333767

21 December 1998 Advances in the measurement of the poled silica nonlinear profile

Alice C. Liu, Michel J. F. Digonnet, Gordon S. Kino, Emile J. Knystautas

Proceedings Volume 3542, Doped Fiber Devices II; (1998) https://doi.org/10.1117/12.333767
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States

Abstract

We show that the Maker fringe analysis previously used to characterize the nonlinearity of thermally poled silica does not yield a unique nonlinear profile d₃₃(z). This problem can be solved by using this method in conjunction with another independent measurement technique in order to first determine the general shape of the nonlinear profile (e.g. whether it exhibits one or multiple peaks). We demonstrate the validity of this approach by characterizing the same poled silica sample first by the Maker fringe analysis, then by imaging the second-harmonic intensity distribution generated by its nonlinear region. The latter indicates that the second-harmonic intensity exhibits a single-peaked distribution, and the former that the d₃₃(z) profile is closely modeled by a buried depth of 5 micrometers , a 1/e width of 10 micrometers , and a peak d₃₃ of 0.44 pm/V.

Citation Download Citation

Alice C. Liu, Michel J. F. Digonnet, Gordon S. Kino, and Emile J. Knystautas "Advances in the measurement of the poled silica nonlinear profile", Proc. SPIE 3542, Doped Fiber Devices II, (21 December 1998); https://doi.org/10.1117/12.333767

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