Photon-number distributions for parametric fluorescence from a nondegenerate optical parametric amplifier are measured with a novel self-homodyne technique. These distributions exhibit the thermal-state character predicted by theory. However, a difference between the fluorescence gain and the signal gain of the parametric amplifier is observed. We attribute this difference to a change in the signal-beam profile during the traveling-wave pulsed amplification process.
© 1998 Optical Society of America
Michael Vasilyev, Sang-Kyung Choi, Prem Kumar, and G. M. D'Ariano, "Investigation of the photon statistics of parametric fluorescence in a traveling-wave parametric amplifier by means of self-homodyne tomography," Opt. Lett. 23, 1393-1395 (1998)