The width of the depletion region in fused-silica samples thermally poled during various periods of time is investigated experimentally with four previously reported characterization techniques in an attempt to unify their findings. Although all measurements give a similar width of the depletion region, it is shown that the determination of the profile of chi(2) is also required for a good estimate of the nonlinearity induced by poling.
© 2005 Optical Society of America
(160.2750) Materials : Glass and other amorphous materials
(160.4330) Materials : Nonlinear optical materials
(160.6030) Materials : Silica
(190.4400) Nonlinear optics : Nonlinear optics, materials
Caroline S. Franco, Gladys A. Quintero, Niklas Myrén, Alexandre Kudlinski, Hassina Zeghlache, Hélio R. Carvalho, Adriana L. C. Triques, Danays M. González, Paula M. P. Gouvêa, Gilbert Martinelli, Yves Quiquempois, Bernhard Lesche, Walter Margulis, and Isabel C. S. Carvalho, "Measurement of depletion region width in poled silica," Appl. Opt. 44, 5793-5796 (2005)