Duration of information storage by means of the stimulated photon echo

Igor V. Yevseyev, Решетов Владимир Александрович

I. V. Evseev, Решетов Владимир Александрович

Igor V. Yevseyev, Решетов Владимир Александрович

Rein K. Kaarli

Time-and-space-domain holography [1,2] by stimulated photon echoes [3] provides a means of storing temporal and spatial properties of an ultrafast-varying light signal and recalling its authentic replica at any later moment. The possibility of recording complex time shapes of light pulses, which also means time-domain optical data storage, is based on the ability of frequency-selective absorbers to store with high accuracy the temporal Fourier components of the incident light [1-3]. The time-domain frequency-selective optical storage of binary or analog data is an alternative approach to the concept of frequency-selective high-density data storage that provides a parallel ultrafast data storage and processing in the frequency domain. The shortest detail of the signal to be stored is limited by the reverse inhomogeneous bandwidth of the storing media which reaches 10-100 fs for frequency-selective materials while the duration of the signal is limited by phase relaxation time T2 (usually 10−9-10−6s).

Ildus S. Bikbov, I. V. Evseev, I. I. Popov +2 more

Igor V. Yevseyev, Valery M. Yermachenko, Решетов Владимир Александрович

It is shown that the time of information storage by the use of stimulated photon echoes in gases can be significantly increased in comparison with the radiative lifetime of the upper level by the action of a longitudinal magnetic field in the case of echo formation on the 1/2–1/2 (or 3/2–1/2) transition.