Program

P.41 -- Poster, NCTP-40

Date: Tuesday, 28 July 2015

Time: 08h30 - 10h00

NOISE REDUCTION IN RAMAN RING LASER BY TWO-TELEGRAPH PREGAUSSIAN PUMP

Doan Quoc Khoa (1), Cao Long Van (2,3), Le Huu Vuong (4)

(1) Quang Tri Teacher Training College, Km3, Highway No. 9, Dong Ha, Quang Tri, Vietnam; (2) Quantum Optics and Engineering Division, Institute of Physics, University of Zielona Góra, Prof. A. Szafrana 4a, 65-516 Zielona Góra, Poland; (3) Faculty of Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland; (4) Hong Duc University, 565 Quang Trung, Thanh Hoa, Vietnam

We consider Raman Ring Laser (RRL) by modeling the laser pump light by a classical time-dependent random process, namely a pregaussian process introduced by Wódkiewicz and his coworkers. It is composed of a finite number of independent so-called telegraphs. The strength of the pregaussian formalism derives from the exact solubility of wide classes of the stochastic equations. Even in the case of one random telegraph signal one can obtain several interesting results. In particular we also observed the so-called noise reduction in RRL: the Stokes output of this laser tends to the stabilize under the influence of the broad-band one-telegraph pregaussian pump as it has been discovered sometimes ago for the chaotic pump Gaussian noise. In this communication, we will extend our model to the case of two-telegraph pregaussian noise. We will compare obtained results with that obtained previously. It will be shown that new results tend to the results for the case of Gaussian chaotic noise.

Presenter: Doan Quoc Khoa