Liu Junye, Sun Lingdong, Chen Yimin, Don Kai, Huang Shihua, Yu Jiaqi, Otto Berg, Douwe Wiersma. ACCUMULATED PHOTON ECHO WITH COHERENT AND INCOHERENT PICOSECOND PULSES IN ORGANIC NANOSTRUCTURE MOLECULAR AGGREGATES[J]. Chinese Journal of Luminescence, 1996,17(3): 197-203
Liu Junye, Sun Lingdong, Chen Yimin, Don Kai, Huang Shihua, Yu Jiaqi, Otto Berg, Douwe Wiersma. ACCUMULATED PHOTON ECHO WITH COHERENT AND INCOHERENT PICOSECOND PULSES IN ORGANIC NANOSTRUCTURE MOLECULAR AGGREGATES[J]. Chinese Journal of Luminescence, 1996,17(3): 197-203DOI:
hase relaxation processes of one-dimension Frenkel excitons in organic nanostructure PIC-I and azaPIC-I mixed aggregates were investigated using heterodyne-detected accumulated photon echoes with double modulations(chopper and standing wave modulator).It was observed that the dephasing time
T
2
of excitons lengthened from 60 ps to 224 ps with increasing the mol of azaPIC-I.It is contrary to shortening of the dephasing time
T
2
of excitons in mixed aggregates with increasing traps.The results were discussed and analyzed under different excitation conditions of pulse duration 4 ps and correlation time 1 ps.