We report what we believe is the first experimental demonstration of photon echoes in an amplifying rare-earth-ion-doped crystal. Population inversion is achieved by optical pumping, which yields high-power photon echoes, with an energy gain of as much as a factor of 5. Effects of the pump on the photon echo process highlight the advantages of an amplifying crystal. New questions concerning the optical dephasing mechanisms in Er3+:YSO have arisen.
© 2005 Optical Society of America
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(160.5690) Materials : Rare-earth-doped materials
(200.4740) Optics in computing : Optical processing
(300.6240) Spectroscopy : Spectroscopy, coherent transient
V. Crozatier, G. Gorju, F. Bretenaker, J.-L. Le Gouët, I. Lorgeré, and E. Baldit, "Photon echoes in an amplifying rare-earth-ion-doped crystal," Opt. Lett. 30, 1288-1290 (2005)