Towards terahertz detection and calibration through spontaneous parametric down-conversion in the terahertz idler-frequency range generated by a 795 nm diode laser system
Kornienko VV, Kitaeva GK, Sedlmeir F, Leuchs G, Schwefel HGL (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 3
Article Number: 051704
Journal Issue: 5
DOI: 10.1063/1.5011201
Abstract
We study a calibration scheme for terahertz wave nonlinear-optical detectors based on spontaneous parametric down-conversion. Contrary to the usual low wavelength pump in the green, we report here on the observation of spontaneous parametric down-conversion originating from an in-growth poled lithium niobate crystal pumped with a continuous wave 50 mW, 795 nm diode laser system, phase-matched to a terahertz frequency idler wave. Such a system is more compact and allows for longer poling periods as well as lower losses in the crystal. Filtering the pump radiation by a rubidium-87 vapor cell allowed the frequency-angular spectra to be obtained down to ∼0.5 THz or ∼1 nm shift from the pump radiation line. The presence of an amplified spontaneous emission "pedestal" in the diode laser radiation spectrum significantly hampers the observation of spontaneous parametric down-conversion spectra, in contrast to conventional narrowband gas lasers. Benefits of switching to longer pump wavelengths are pointed out, such as collinear optical-terahertz phase-matching in bulk crystals.
Authors with CRIS profile
Involved external institutions
Dukhov Research Institute of Automatics
Russian Federation (RU)
Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова
Russian Federation (RU)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
University of Otago
New Zealand (NZ)
Russian Federation (RU)
Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова
Russian Federation (RU)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
University of Otago
New Zealand (NZ)
How to cite
APA:
Kornienko, V.V., Kitaeva, G.K., Sedlmeir, F., Leuchs, G., & Schwefel, H.G.L. (2018). Towards terahertz detection and calibration through spontaneous parametric down-conversion in the terahertz idler-frequency range generated by a 795 nm diode laser system. APL Photonics, 3(5). https://doi.org/10.1063/1.5011201
MLA:
Kornienko, Vladimir V., et al. "Towards terahertz detection and calibration through spontaneous parametric down-conversion in the terahertz idler-frequency range generated by a 795 nm diode laser system." APL Photonics 3.5 (2018).
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