Shape locking of photon echoes (A)

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

А. А. Калачев, L. A. Nefedev, В. А. Зуйков +1 more

S. O. Elyutin, Sergey M. Zakharov, Edward A. Manykin

L. S. Vasilenko, Н. Н. Рубцова

Igor V. Yevseyev, Решетов Владимир Александрович

An expression for the electric field intensity of the photon echo formed in a gaseous medium on transition between two degenerate levels under the action of two linearly polarized exciting pulses is derived. Using the obtained relationships the effect of photon-echo shape locking is analysed for a square shaped second (‘locking’) exciting pulse as well as for the case of a smooth envelope of the hyperbolic secant form. It is shown that in degenerate systems as well as in non-degenerate ones, photon-echo shape locking takes place if the shape of the ‘locking’ pulse is square and does not take place in the case of a smooth envelope.

Leonid A. Nefediev, É. I. Khakimzyanova, Guzel I. Garnaeva

We have studied the information locking effect and the effect of correlation of the shape of an object laser pulse with the shape of a stimulated photon echo response in the presence of external spatially inhomogeneous electric fields. We have shown that, for the transition 3 H 4 - 3 P 0 in a LaF 3 :Pr 3+ crystal, one can observe the effect of the correlation of the shape of an object laser pulse with the shape of a stimulated photon echo response and, depending on the scheme of the action of external spatially inhomogeneous electric fields, either the information locking effect or the information destroying effect.