Hole-filling of persistent spectral holes in the excitonic absorption band of CuBr quantum dots

Autor:	J. Moniatte, R. Levy, B. Hönerlage, Pierre Gilliot, A. I. Ekimov, Jan Valenta
Rok vydání:	1997
Předmět:	3D optical data storage Materials science Physics and Astronomy (miscellaneous) business.industry Exciton Photoionization Optical storage Molecular physics Amorphous solid Quantum dot Absorption band Optoelectronics business Excitation
Zdroj:	Applied Physics Letters. 70:680-682
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.118273
Popis:	Persistent spectral-holes (p-SH) are burned in the Z1,2 excitonic band of CuBr nanocrystals by a pulsed laser excitation. The annealing of p-SH is studied by three types of hole-filling (HF) experiments: (i) the spontaneous HF, (ii) thermally-induced HF, and (iii) the laser-induced HF. Results are compared to the well developed theory of the persistent spectral hole-burning (p-SHB) in the system of molecules in amorphous matrices. Both p-SHB and HF phenomena can be explained within the framework of a photochemical reaction like the photoionization of nanocrystals. The potential application of p-SHB to the frequency-domain optical data storage is discussed.
Databáze:	OpenAIRE
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