Optical investigation of infrared dyes in hybrid thin films

We report on steady-state absorption and emission measurements for two infr ared (IR) dye molecules, IR5 and IR1051, incorporated in hybrid organic/ino rganic zirconia-based thin films synthesized with a sol-gel technique. For comparison, measurements in liquid solutions have also been carried out, an d an estimation of the relative quantum efficiency in solid glassy material with respect to liquid solution is reported. Absorption and emission spect ra are discussed in terms of physical and chemical interactions with the ho st matrix. The present work provides the evidence of successful doping of s olid films with dyes for planar waveguides emitting in the infrared region up to 1.3 mu m. (C) 1999 American Institute of Physics. [S0003-6951(99)0134 1-8].