%0 Journal Article
%T Absorption Measurements of Periodically Poled Potassium Titanyl Phosphate (PPKTP) at 775 nm and 1550 nm
%A Jessica Steinlechner
%A Stefan Ast
%A Christoph Kr¨¹ger
%A Amrit Pal Singh
%A Tobias Eberle
%A Vitus H£¿ndchen
%A Roman Schnabel
%J Sensors
%D 2013
%I MDPI AG
%R 10.3390/s130100565
%X The efficient generation of second-harmonic light and squeezed light requires non-linear crystals that have low absorption at the fundamental and harmonic wavelengths. In this work the photo-thermal self-phase modulation technique is exploited to measure the absorption coefficient of periodically poled potassium titanyl phosphate (PPKTP) at 1,550 nm and 775 nm. Themeasurement results are (84¡À40) ppm/cmand (127¡À24) ppm/cm, respectively. We conclude that the performance of state-of-the-art frequency doubling and squeezed light generation in PPKTP is not limited by absorption.
%K PPKTP
%K absorption
%K photo-thermal
%U http://www.mdpi.com/1424-8220/13/1/565