HIGH-TEMPERATURE PHOTOCHEMICAL HOLE BURNING AND LASER-INDUCED HOLE FILLING IN DYE-DOPED POLYMER SYSTEMS

High-temperature photochemical hole burning (PHB) and laser-induced hole filling were studied for dye-doped polymer systems focusing on the capability of hole formation at 80 K. Hole area of a hole burnt at 4.2 K was almost conserved after cycle annealing up to 80 K irrespective of the capability of hole formation at 80 K. The extent of spectral diffusion also hardly affected this capability. Furthermore, it was not suggested to be the homogeneous width alone that affects the capability of hole formation at 80 K. Important factor for hole formation at 80 K is elucidated to be the suppression of the laser-induced hole filling at 80 K.