Nonlinear Optical Absorption in GaSe upon Laser Excitation
| Autor: | A. G. Guseinov, N. D. Dashdamirova, R. M. Mamedov, V. M. Salmanov, A. A. Salmanova |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter::Quantum Gases
Materials science Condensed Matter::Other business.industry Photoconductivity Exciton Physics::Optics Resonance Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Condensed Matter::Materials Science law Atomic physics Photonics Absorption (electromagnetic radiation) Luminescence business Excitation |
| Zdroj: | Optics and Spectroscopy. 128:501-504 |
| ISSN: | 1562-6911 0030-400X |
| DOI: | 10.1134/s0030400x20040189 |
| Popis: | The nonlinear absorption in GaSe crystals at high optical excitation levels is experimentally studied. A Nd:YAG laser (first and second harmonics, 1064 and 532 nm) and a liquid laser (tuning range 594–643 nm) were used as excitation sources. It is shown that the features observed in the exciton resonance region of the absorption, luminescence, and photoconductivity spectra of GaSe crystals at high optical excitation levels can be explained by exciton–exciton interaction and Coulomb interaction screening by free carriers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |