Ultrashort pulse characterization using a scanning Fabry-Perot etalon enabling rapid acquisition and retrieval of a sonogram at rates up to 1.52 Hz

Rapid characterization of ultrashort pulses has been demonstrated by measur ing a two-photon absorption sonogram trace. The use of a scanning Fabry-Per ot frequency filter has made it possible to acquire and retrieve a sonogram at rates as high as 1.52 Hz. We discuss details of the experimental setup, including the synchronization electronics and the acquisition/retrieval so ftware. Excellent agreement is obtained between retrieved pulse data and in dependent experimental pulse measurements. (C) 2001 American Institute of P hysics.