Broadband infrared light source by simultaneous parametric down-conversion

• Published in: Scientific reports Vol. 11; no. 1; pp. 17986 - 8
• Main Authors: Hojo, Masayuki, Tanaka, Koichiro
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 09.09.2021; Nature Publishing Group; Nature Portfolio
• Subjects: 639/624/1020; 639/624/400/482; Chemical analysis; Humanities and Social Sciences; Infrared spectroscopy; Light; Light sources; Lithium; multidisciplinary; Radiation; Science; Science (multidisciplinary)

Spontaneous parametric down-conversion is an essential tool for a quantum light source in the infrared region ranging 2–5 µm for the purpose of material identification, chemical analysis, and gas sensing. So far, photon pairs from the process in a nonlinear crystal have low tunability and a narrow s...