Two-color fs laser-induced air-plasma enables generation of THz pulses with extremely large bandwidth. In recent years, significant progress has been made on improving THz generation efficiency from such a process, including adoption of cylindrical lens focusing , multiple-color (harmonic) mixing , and long wavelength pumping , etc. Very recently, with a 30-mJ, 3.9-m, 20-Hz pump laser, THz yield as high as 185J (3.7 mW) has been reported . However, with the more accessible 1-kHz commercial OPA as the long wavelength pumping source, the reported THz yield was 0.6 mW . In this abstract, we present highest THz yield from a standard kHz OPA driving source - THz generation at multi-mW-level. We also show the huge potential of such THz source by demonstrating strong nonlinear transmission in a n-doped SiC sample.
|Title of host publication||Proceedings of 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference|
|Publication date||Jun 2021|
|Publication status||Published - Jun 2021|
|Event||2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference - Virtual event, Munich, Germany|
Duration: 21 Jun 2021 → 25 Jun 2021
|Conference||2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference|
|Period||21/06/2021 → 25/06/2021|
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