Self-diffraction of frequency modulated light in the Bi12TiO20 crystal

M. Bryushinin (1) , V Kulikov (1) , I. Sokolov (1) , Philippe Delaye (2) , Gilles Pauliat (2)

1 A.F. Ioffe Physical-Technical Institute
2 Laboratoire Charles Fabry / Manolia

The self diffraction of frequency modulated light in the photorefractive B12TiO20 crystal was studied experimentally. To observe the effect, the crystal was illuminated by two light beams with the relative frequency shift Δf(t). In the experiments, linear frequency modulation was used: Δf(t) = At. As a result of the light self diffraction on a hologram moving with a constant acceleration, the power of the light beams at the crystal output changed in the form of a chirp pulse. It was found that the pulse appears at the instant of stop ping the interference pattern, and its duration is determined by the rate of frequency change A and the holo gram recording time τsc.

Domaines: Optique [physics.optics]

M. Bryushinin, V Kulikov, I. Sokolov, Philippe Delaye, Gilles Pauliat. Self-diffraction of frequency modulated light in the Bi12TiO20 crystal . Physics of the Solid State, 2014, 56, pp.1206-1209. ⟨10.1134/S1063783414060092⟩. ⟨hal-01192677⟩