Lifetime of small polarons in nominally pure, reduced LiNbO3
Autor(en): | Imlau, M. Merschjann, C. Berben, D. Wöhlecke, M. |
Stichwörter: | Dissociation; Light refraction; Photoreactivity; Photorefractive materials, Charge-transport model; Infrared spectral; Intense laser pulse; Light-induced absorption; Lithium niobate; Room temperature; Small polarons; Temperature-dependent measurements, Polarons | Erscheinungsdatum: | 2005 | Herausgeber: | Optical Society of America | Journal: | Optics InfoBase Conference Papers | Startseite: | 68 | Seitenende: | 73 | Zusammenfassung: | The processes of optical dissociation and recombination of bipolarons are investigated in congruently melting lithium niobate. Time-resolved and temperature-dependent measurements of the light-induced absorption in the blue, red and infrared spectral range after exposure to short, intense laser pulses (l = 532 nm) are performed and the lifetime of small free polarons is determined in undoped LiNbO3 at room temperature for the fi rst time. A qualitative charge-transport model for dissociation of bipolarons and recombination of small polarons is developed on the basis of our fi ndings. © 2005 Optical Society of America. |
Beschreibung: | Conference of Photorefractive Effects, Materials, and Devices, PEMD 2005 ; Conference Date: 19 July 2005 Through 19 July 2005; Conference Code:104870 |
ISBN: | 9781557527936 | ISSN: | 21622701 | Externe URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899827875&partnerID=40&md5=f3448b26d5f2f79bfafc065f462aaed5 |
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geprüft am 19.05.2024