Energy and spectral characteristics of a parametric generator based on a nonlinear ZnGeP2 crystal pumped by a Ho : YAG laser
| Autor: | N. N. Yudin, A. I. Gribenyukov, S. N. Podzyvalov, I. G. Polovtsev, V. V. Demin, S. M. Vatnik |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Terahertz radiation Physics::Optics Statistical and Nonlinear Physics 02 engineering and technology Radiation 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Power (physics) 010309 optics Generator (circuit theory) Crystal Nonlinear system Optics 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology business Single crystal Parametric statistics |
| Zdroj: | Quantum Electronics. 48:603-606 |
| ISSN: | 1468-4799 1063-7818 |
| DOI: | 10.1070/qel16682 |
| Popis: | We have experimentally realised the average generation power of a parametric generator based on a ZnGeP2 single crystal, which constituted ~1.5 W at an efficiency of ~28.6 % in the wavelength range of 3.5 – 4.8 μm with an average pump radiation power of ~5.5 W and its energy density of ~ 0.47 J cm−2. It is shown that there are threshold conditions for the average pump power, providing the realisation of parametric generation. In this case, an increase in the generation efficiency with an increase in the energy density of pump radiation to ~ 0.4 J cm−2 is observed; with its further increase, the output power increases due to a decrease in the parametric generation threshold. Parametric generators (PGs) based on ZnGeP2 single crystals with such characteristics are promising for solving many applied problems, including generation of terahertz radiation when nonlinear crystals are pumped by radiation from these PGs at difference frequency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|