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Generation of broadband spontaneous parametric fluorescence using multiple bulk nonlinear crystals

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Title: Generation of broadband spontaneous parametric fluorescence using multiple bulk nonlinear crystals
Authors: Okano, Masayuki Browse this author
Okamoto, Ryo Browse this author →KAKEN DB
Tanaka, Akira Browse this author
Subashchandran, Shanthi Browse this author
Takeuchi, Shigeki Browse this author →KAKEN DB
Issue Date: 18-Jun-2012
Publisher: Optical Society of America
Journal Title: Optics Express
Volume: 20
Issue: 13
Start Page: 13977
End Page: 13987
Publisher DOI: 10.1364/OE.20.013977
PMID: 22714463
Abstract: We propose a novel method for generating broadband spontaneous parametric fluorescence by using a set of bulk nonlinear crystals (NLCs). We also demonstrate this scheme experimentally. Our method employs a superposition of spontaneous parametric fluorescence spectra generated using multiple bulk NLCs. A typical bandwidth of 160 nm (73 THz) with a degenerate wavelength of 808 nm was achieved using two β-barium-borate (BBO) crystals, whereas a typical bandwidth of 75 nm (34 THz) was realized using a single BBO crystal. We also observed coincidence counts of generated photon pairs in a non-collinear configuration. The bandwidth could be further broadened by increasing the number of NLCs. Our demonstration suggests that a set of four BBO crystals could realize a bandwidth of approximately 215 nm (100 THz). We also discuss the stability of Hong-Ou-Mandel two-photon interference between the parametric fluorescence generated by this scheme. Our simple scheme is easy to implement with conventional NLCs and does not require special devices.
Rights: © 2012 Optical Society of America
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 竹内 繁樹

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