THz Time-Domain Reflection Spectroscopy of KTiOPO4
| Autor: | Trygve Sørgård, Fredrik Laurell, Kjell Martin Molster, Carlota Canalias, Hugo Laurell, Valdas Pasiskevicius, Ulf Osterberg |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
business.industry Terahertz radiation Potassium titanyl phosphate 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Photon upconversion Terahertz spectroscopy and technology 010309 optics chemistry.chemical_compound chemistry 0103 physical sciences Polariton Optoelectronics Laser power scaling 0210 nano-technology business Absorption (electromagnetic radiation) Refractive index |
| Zdroj: | 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| Popis: | Terahertz (THz) radiation has been of increasing interest in the last decades, for security, manufacturing, quality control, medical and security imaging applications. The field requires more efficient and affordable sources and nonlinear upconversion schemes point in this direction. KTiOPO, (KTP) is a well-established material for nonlinear optical applications in the visible and near-IR region thanks to its large transparency, high nonlinear coefficient and damage threshold. Its reasonably low absorption [1, 2] and strong polariton resonances [1] show promise for efficient IR to THz upconversion and Wu et al. [2] recently demonstrated its superiority to LiNbO3 and LiTaO3 in a back to back experiment. However, the complex refractive index needs to be measured before further power scaling is realistic. |
| Databáze: | OpenAIRE |
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