Twist and strain tuning of third harmonic generation in glass nanostrand with two sub-wavelength hollow channels

Chen Y, Hammer J, Joly NY, Russell PSJ (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Optics Letters Optical Society of America

Book Volume: 46

Pages Range: 5288-5291

Journal Issue: 20

DOI: 10.1364/OL.443378

Abstract

A major challenge in third harmonic generation and its converse, parametric down-conversion, is how to arrange phase matching between signals at ω and 3ω while maintaining a high nonlinear overlap. In this Letter, we present a design consisting of a nanostrand of glass with two hollow channels. The fundamental and third harmonic modal fields, enhanced in the region between the channels, have high nonlinear overlap, while the phase-matching wavelength can be coarse-tuned by gas pressure and fine-tuned by axial strain and mechanical twist, which, remarkably, have opposite effects. The ability to adjust the phase-matching condition may facilitate efficient generation of entangled photon triplets.

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Chen, Y., Hammer, J., Joly, N.Y., & Russell, P.S.J. (2021). Twist and strain tuning of third harmonic generation in glass nanostrand with two sub-wavelength hollow channels. Optics Letters, 46(20), 5288-5291. https://doi.org/10.1364/OL.443378

MLA:

Chen, Y., et al. "Twist and strain tuning of third harmonic generation in glass nanostrand with two sub-wavelength hollow channels." Optics Letters 46.20 (2021): 5288-5291.

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