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Type: Journal article
Title: Linewidth of collimated wavelength-converted emission in Rb vapour
Author: Akulshin, A.
Perrella, C.
Truong, G.
Luiten, A.
Budker, D.
McLean, R.
Citation: Applied Physics B, 2014; 117(1):203-209
Publisher: Springer-Verlag
Issue Date: 2014
ISSN: 0946-2171
Organisation: Institute for Photonics & Advanced Sensing (IPAS)
Statement of
Alexander Akulshin, Christopher Perrella, Gar-Wing Truong, Andre Luiten, Dmitry Budker, Russell McLean
Abstract: We present a study of the spectral linewidth of collimated blue light (CBL) that results from wave mixing of low-power continuous-wave laser radiation at 780 and 776 nm and an internally generated mid-IR field at 5.23 μm in Rb vapour. Using a high-finesse Fabry–Perot interferometer, the spectral width of the CBL is found to be <1.3 MHz for a wide range of experimental conditions. We demonstrate using frequency-modulated laser light that the CBL linewidth is mainly limited by the temporal coherence of the applied laser fields rather than the atom–light interaction itself. The obtained result allows the same 1.3 MHz upper limit to be set for the linewidth of the collimated mid-IR radiation at 5.23 μm, which has not been directly detected.
Rights: © Springer-Verlag Berlin Heidelberg 2014
RMID: 0030000091
DOI: 10.1007/s00340-014-5823-0
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Appears in Collections:IPAS publications

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