Enhanced Terahertz Detection Efficiency via Grating-Assisted Noncollinear Electro-Optic Sampling
| Autor: | Jean-Michel Ménard, Alexei Halpin, Wei Cui, Kashif M. Awan, Ksenia Dolgaleva, Aidan W. Schiff-Kearn |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Terahertz radiation Bandwidth (signal processing) Physics::Optics General Physics and Astronomy 02 engineering and technology Grating 021001 nanoscience & nanotechnology 01 natural sciences Crystal Nonlinear system Sampling (signal processing) 0103 physical sciences Broadband Optoelectronics 010306 general physics 0210 nano-technology business Spectroscopy |
| Zdroj: | Physical Review Applied. 12 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.12.031003 |
| Popis: | Efficient, broadband terahertz detection through electro-optic sampling is an enabling technology for numerous applications, including time-resolved spectroscopy of condensed matter systems and fundamental investigations of the quantum vacuum. The technique is inherently sensitive, but ultimately limited by the intrinsic optical properties of the known nonlinear crystals. In this study the authors imprint a phase grating on the surface of a nonlinear crystal, to define a noncollinear detection geometry inside the crystal. This surface grating allows improved phase-matching conditions, which lead to a doubling of detection bandwidth and efficiency. |
| Databáze: | OpenAIRE |
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