Abstract
In order to realize an organic distributed feedback (DFB) laser based on photoinduced surface relief grating (SRG) on azobenzene polymer, fluorescence quench of dye doped in azobenzene polymer is large obstacle. In order to elucidate the mechanism, time-resolved fluorescence and pump-probe transient absorption were measured, and the quench mechanism was suggested to be oxidative electron transfer from azobenzene to the dye. Some solutions to the quenching problem were proposed in terms of device and material designs, and a double-layer design was actually employed to fabricate an organic DFB laser based on SRG, resulting in successful lasing and demonstration of wavelength programmability.
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