Broadband and efficient adiabatic three-wave-mixing in a temperature-controlled bulk crystal

Markov, A. et al. (2018) Broadband and efficient adiabatic three-wave-mixing in a temperature-controlled bulk crystal. Optics Express, 26(4), pp. 4448-4458. (doi: 10.1364/OE.26.004448) (PMID:29475295)

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Nonlinear interactions are commonly used to access to wavelengths not covered by standard laser systems. In particular, optical parametric amplification (OPA) is a powerful technique to produce broadly tunable light. However, common implementations of OPA suffer from a well-known trade-off, either achieving high efficiency for narrow spectra or inefficient conversion over a broad bandwidth. This shortcoming can be addressed using adiabatic processes. Here, we demonstrate a novel technique towards this direction, based on a temperature-controlled phase mismatch between the interacting waves. Using this approach, we demonstrate, by tailoring the temperature profile, an increase in conversion efficiency by 21%, reaching a maximum of 57%, while simultaneously expanding the bandwidth to over 300 nm. Our technique can readily enhance the performances of current OPA systems.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Clerici, Professor Matteo
Authors: Markov, A., Mazhorova, A., Breitenborn, H., Bruhacs, A., Clerici, M., Modotto, D., Jedrkiewicz, O., Di Trapani, P., Major, A., Vidal, F., and Morandotti, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN (Online):1094-4087
Published Online:12 February 2018
Copyright Holders:Copyright © 2018 Optical Society of America
First Published:First published in Optics Express 26(4): 4448-4458
Publisher Policy:Reproduced in accordance with the publisher copyright policy
Data DOI:10.5525/gla.researchdata.576

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
727471Quantum-enhanced THz spectroscopy and imagingMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/P009697/1ENG - ENGINEERING ELECTRONICS & NANO ENG