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- Title
Strongly nondegenerate spontaneous parametric down-conversion for calibration of terahertz-wave detectors.
- Authors
Kitaeva, Galiya Kh.; Kornienko, Vladimir V.
- Abstract
The impact of spatial limitation of the nonlinear interaction volume on the spontaneous parametric down-conversion spectra in a strongly nondegenerate regime is analyzed from the point of absolute calibration of the terahertz-wave nonlinear-optical detectors. We show that the idler wave angular resolution of the calibration method can be inherently low (about 1 to 10 degrees in lithium niobate crystals), and to fill all the input modes with external idler radiation, one has to take special care on geometry of the nonlinear interaction. Angular sensitivity distribution function is constructed, and a consecutive description is provided for both the parametric down-conversion and the external idler radiation detection processes.
- Subjects
NON-degenerate perturbation theory; PARAMETER estimation; CALIBRATION; SUBMILLIMETER wave detectors; DISTRIBUTION (Probability theory); NUCLEAR counters
- Publication
International Journal of Quantum Information, 2017, Vol 15, Issue 8, p-1
- ISSN
0219-7499
- Publication type
Article
- DOI
10.1142/S021974991740024X