title: Thermally induced self-focusing and optical beam interactions in planar strontium barium niobate waveguides.
abstract: We present an experimental study of thermally induced self-focusing effects and interactions of incoherent light beams in strontium barium niobate waveguides. Depending on the input power, a single parallel beam is strongly focused inside the sample up to diameters of several micrometers. For higher input power we observe the splitting of the beam in a sequence of several spots. We demonstrate that these thermally induced refractive-index patterns can be used to focus and deflect an incoherent guided probe beam in the waveguide with time constants below 1 ms.
authors: D
authors: D
authors: Kip
authors: E
authors: E
authors: Krätzig
authors: V
authors: V
authors: Shandarov
authors: P
authors: P
authors: Moretti