A new design of pulse-contrast-measuring correlator, based on optical parametric amplification, is presented. It amplifies the wings of the pulse and allows high-contrast measurement with a low-sensitivity detector. The test system demonstrates an ability to measure a dynamic range of >1011:1.
© 2004 Optical Society of America
Edwin J. Divall and Ian N. Ross, "High dynamic range contrast measurements by use of an optical parametric amplifier correlator," Opt. Lett. 29, 2273-2275 (2004)