Photon-echo-based devices have been proposed for many applications in data storage, image processing, and optical communications. Many of these applications would benefit if the output from the photon-echo process could be used as input in a second photon-echo process. We demonstrate the generation of such secondary echoes, using the amplified output from an initial photon-echo process. The amplification is performed with a Pr:ZBLAN fiber amplifier, which gives a gain of more than 300 at 606 nm when pumped with 320 mW of power at 476 nm.
© 1999 Optical Society of America
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3510) Lasers and laser optics : Lasers, fiber
(200.4560) Optics in computing : Optical data processing
(210.2860) Optical data storage : Holographic and volume memories
(270.1670) Quantum optics : Coherent optical effects
R. Krishna Mohan, Ulf Elman, Mingzhen Tian, and Stefan Kröll, "Regeneration of photon echoes with amplified photon echoes," Opt. Lett. 24, 37-39 (1999)