Abstract
Linear and nonlinear optical properties of pulsed-laser-deposited (PLD) films are presented. The effect of exposure on these films is investigated in some detail. The PLD films showed photobleaching as a result of exposure to 610-nm laser light. Degenerate four-wave mixing and Z-scan techniques were used to obtain the nonlinear refractive index and absorption coefficient of germanium arsenic selenide films. films are highly nonlinear, and their measured value was The suitability of PLD films for ultrafast all-optical switching is also discussed. We designed and simulated a nonlinear directional coupler switch that can be made in PLD films.
© 2005 Optical Society of America
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