Chen Y, Hammer J, Joly NY, Russell PSJ (2021)
Publication Type: Journal article
Publication year: 2021
Book Volume: 46
Pages Range: 5288-5291
Journal Issue: 20
DOI: 10.1364/OL.443378
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.
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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