| Autor: |
Tian, Wenlong, Cirmi, Giovanni, Olgun, Halil T., Mutter, Patrick, Canalias, Carlota, Zukauskas, Andrius, Wang, Lu, Kueny, Elias, Ahr, Frederike, Calendron, Anne-Laure, Reichert, Fabian, Hasse, Kore, Hua, Yi, Schimpf, Damian N., Çankaya, Hüseyin, Pergament, Mikhail, Hemmer, Michael, Matlis, Nicholas, Pasiskevicius, Valdas, Laurell, Fredrik, Kärtner, Franz X. |
| Zdroj: |
Optics Letters; February 2021, Vol. 46 Issue: 4 p741-744, 4p |
| Abstrakt: |
We demonstrate multi-cycle terahertz (MC-THz) generation in a 15.5 mm long periodically poled rubidium (Rb)-doped potassium titanyl phosphate (Rb:PPKTP) crystal with a poling period of 300 µm. By cryogenically cooling the crystal to 77 K, up to 0.72 µJ terahertz energy is obtained at a frequency of 0.5 THz with a 3 GHz bandwidth. A maximum internal optical-to-terahertz conversion efficiency of 0.16% is achieved, which is comparable with results achieved using periodically poled lithium niobate crystal. Neither photorefractive effects nor damage was observed with up to 900mJ/cm^2, showing the great potential of Rb:PPKTP for multi-millijoule-level MC-THz generation. |
| Databáze: |
Supplemental Index |
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