Submillisecond pulses by two-wave coupling in Bi12TiO20 crystals

We experimentally observed the unusually fast response in a two-wave mixing arrangement with fiber-like Bi12TiO20 crystals on transient change of the external electric field. Pulses of the amplification of the signal wave with a rise time down to 0.2 ms and a width of 0.5 ms at a total input intensity of 6 mW/mm2 are obtained when applying a rising or decreasing front of an external electric field to the crystal. The two-wave coupling without external field has a response time of 200 ms.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.