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Freytag, F.; Booker, P.; Corradi, G.; Messerschmidt, S.; Krampf, A.; Imlau, M.: Picosecond near-to-mid-infrared absorption of pulse-injected small polarons in magnesium doped lithium niobate. In: Optical Materials Express 8 (2018), Nr. 6, S. 1505-1514. DOI: https://doi.org/10.1364/OME.8.001505
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Sum total of downloads: 112
| Abstract: | |
Femtosecond-pulse-induced (Epump = 2:5 eV) picosecond infrared absorption is studied in the spectral region between 0.30 eV and 1.05 eV in LiNbO3:Mg. We find a noninstantaneous mid-infrared absorption peak in the time domain up to 1 ps and a broad-band, long-lived absorption (maximum at 0.85 eV, width ≈ 0:5 eV), for t > 1 ps. The modelling succeeds by considering small Nb4+ Nb electron polaron formation along the sequence: (i) twophoton injection of hot electron-hole pairs at Nb-O-octahedra, (ii) dissociation and electron cooling by electron-phonon-scattering, and (iii) electron self-localization by strong electronphonon- coupling. | |
| License of this version: | OSA Open Access License |
| Document Type: | Article |
| Publishing status: | publishedVersion |
| Issue Date: | 2018 |
| Appears in Collections: | An-Institute |
distribution of downloads over the selected time period:
downloads by country:
| pos. | country | downloads | ||
|---|---|---|---|---|
| total | perc. | |||
| 1 |  |
Germany | 67 | 59.82% |
| 2 |  |
United States | 24 | 21.43% |
| 3 |  |
China | 8 | 7.14% |
| 4 |  |
Russian Federation | 4 | 3.57% |
| 5 |  |
Iran, Islamic Republic of | 2 | 1.79% |
| 6 |  |
Indonesia | 2 | 1.79% |
| 7 |  |
No geo information available | 1 | 0.89% |
| 8 |  |
Mexico | 1 | 0.89% |
| 9 |  |
France | 1 | 0.89% |
| 10 |  |
Spain | 1 | 0.89% |
| other countries | 1 | 0.89% | ||
Further download figures and rankings:
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