Comparison of Raman Spectra of Optically Nonlinear LiTaO3:Cr3+ (0.005 wt%) Crystal Laser Excited in Visible (532 nm) and Near-IR (785 nm) Areas
| Autor: | Mikhail Palatnikov, Nikolay Sidorov, Alexander Pyatyshev, Alexander Skrabatun |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Photonics, Vol 10, Iss 4, p 439 (2023) |
| Druh dokumentu: | article |
| ISSN: | 10040439 2304-6732 |
| DOI: | 10.3390/photonics10040439 |
| Popis: | Raman spectra have been excited by the radiation of lasers generatingon in the visible (532 nm) and near-IR (785 nm) ranges in a LiTaO3:Cr3+ (0.005 wt%) crystal. The obtained spectra were compared. Recorded Raman spectra contained bands in the range of −1 (first order) up to 2000 cm−1 (second order). The Raman spectra of the second order, excited by near-IR laser radiation, were located against the background of a wide, luminescent halo. The frequency of a single low-intensity band exceeded the exact frequency of an overtone corresponding to the completely symmetric fundamental 4A1(z)LO mode. The attribution of other second-order bands with higher frequencies remains unclear. |
| Databáze: | Directory of Open Access Journals |
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