Slow and fast light in photorefractive SBN:60

Horn W, Bassewitz JV, Denz C

Abstract

We demonstrate slow and fast light at room temperature by dispersive phase-coupling in a photorefractive SBN:60 crystal. Non-degenerated wave-mixing is used to obtain delayed and amplified pulses with reduced or increased group velocity of v(g) = 0.2 cm s(-1) and v(g) = -1.3 cm s(-1), respectively. The gain spectrum is modulated by using multiple frequency shifted pumps simultaneously. The complete dispersion of the spectrum is determined via the phase modulation technique. We compare the experimental results to numerical simulations based on coupled-wave equations.