Mj. Damzen et al., HIGH-INTENSITY EFFECTS IN SELF-PUMPED PHOTOREFRACTIVE PHASE-CONJUGATION USING NANOSECOND PULSES, J. mod. opt., 42(10), 1995, pp. 2051-2057
This paper reports on self-pumped photorefractive phase conjugation us
ing repetitively pulsed high intensity (MW cm(-2)) pulses of nanosecon
d duration. An intensity-dependent phase conjugate reflectivity is mea
sured experimentally. In the corner self-pumped geometry the direction
of beam fanning and corner self-pumping is observed to reverse above
a critical intensity. Formation of a higher order spatial mode is repo
rted for the external loop self-pumped geometry.