Evidence of second-order nonlinear susceptibility sign reversal in thermally poled samples

Kudlinski, A.; Quiquempois, Y.; Zeghiache, H.; Martinelli, G.
October 2003
Applied Physics Letters;10/20/2003, Vol. 83 Issue 16, p3242
Academic Journal
Thin layers of silica have been removed from thermally poled samples using a hydrofluoric acid etching. After each etching, the second-harmonic signal generated within the remaining glass has been recorded by means of a Maker fringes experiment. Evidence of a sign reversal within the nonlinear distribution is pointed out for 10-min poled Infrasil™ samples. © 2003 American Institute of Physics.


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