Title:	Simultaneous three-wave and six-wave mixing of microwave and optical fields in an atomic medium
Authors:	Pradosh, K. N. Saaswath, J. K. Narayanan, Andal
Issue Date:	22-May-2023
Publisher:	Optica Publishing Group
Citation:	Optics Express, 2023, Vol. 31, No. 11,p18318
Abstract:	We experimentally investigate near-infrared optical field generation through simultaneous three-wave mixing (TWM) and six-wave mixing (SWM) processes in room-temperature 85Rb atoms. The nonlinear processes are induced using three hyperfine levels in the D1 manifold, which cyclically interact with pump optical fields and an idler microwave field. The simultaneous appearance of TWM and SWM signals in discrete frequency channels is made possible by breaking the three-photon resonance condition. This gives rise to coherent population oscillations (CPO), which are observed experimentally. We explain through our theoretical model the role of CPO in the generation of the SWM signal and its enhancement due to parametric coupling with the input seed field in contrast to the TWM signal. Our experiment proves that a single tone microwave can be converted to multiple optical frequency channels. The simultaneous existence of TWMand SWMprocesses can potentially enable various types of amplification to be achieved with a single neutral atom transducer platform.
Description:	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/8213
ISSN:	1094-4087 (print) 1094-4087 (online)
Alternative Location:	http://arxiv.org/abs/ https://doi.org/10.1364/OE.488060
Copyright:	2023, The Publisher
Appears in Collections:	Research Papers (LAMP)

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