Temporal compressions of optical pulses and pulse trains have been performed by the photon-echo process in Tm-doped YAG at 793 nm. Single-pulse temporal compression by almost a factor of 500 from 10 µs to 22 ns and pulse train compression by a factor of 14 from 5µs to 350 ns with a high-speed frequency-tunable external-cavity diode laser are demonstrated. It is suspected that significantly higher compression could be obtained by improved control of the laser frequency and laser frequency chirps. Theoretically, Tm-doped YAG should be capable of compressing single pulses by almost a factor of 10<sup>7</sup>.
© 2000 Optical Society of America
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(140.2020) Lasers and laser optics : Diode lasers
(200.4740) Optics in computing : Optical processing
(270.1670) Quantum optics : Coherent optical effects
(300.6240) Spectroscopy : Spectroscopy, coherent transient
Xiangjun Wang, Mikael Afzelius, Nicklas Ohlsson, Ulf Gustafsson, and Stefan Kröll, "Coherent transient data-rate conversion and data transformation," Opt. Lett. 25, 945-947 (2000)