Lifetime of small polarons in nominally pure, reduced LiNbO3
| Autor(en): | Imlau, M. Merschjann, C. Berben, D. Wöhlecke, M. |
Stichwörter: | Infrared radiation; Light absorption; Lithium niobate; Optical properties; Thermal effects, Optical dissociation; Qualitative charge-transport model; Temperature-dependent measurements, Polarons | Erscheinungsdatum: | 2005 | Herausgeber: | Optical Society of American (OSA) | Journal: | OSA Trends in Optics and Photonics Series | Volumen: | 99 | 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 (λ =532 nm) are performed and the lifetime of small free polarons is determined in undoped LiNbO3 at room temperature for the first time. A qualitative charge-transport model for dissociation of bipolarons and recombination of small polarons is developed on the basis of our findings. © 2005 Optical Society of America. |
Beschreibung: | Conference of 10th International Conference on Photorefractive, Effects, Materials, and Devices ; Conference Date: 19 July 2005 Through 23 July 2005; Conference Code:66936 |
ISSN: | 10945695 | Externe URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-33645212497&partnerID=40&md5=92324a2d13370874a7bc834bee088138 |
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