Polarization-Tailored Raman Frequency Conversion in Chiral Gas-Filled Hollow-Core Photonic Crystal Fibers
Davtyan S, Novoa D, Chen Y, Frosz MH, Russell PSJ (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 122
Journal Issue: 14
DOI: 10.1103/PhysRevLett.122.143902
Abstract
Broadband-tunable sources of circularly polarized light are crucial in fields such as laser science, biomedicine, and spectroscopy. Conventional sources rely on nonlinear wavelength conversion and polarization control using standard optical components and are limited by the availability of suitably transparent crystals and glasses. Although a gas-filled hollow-core photonic crystal fiber provides pressure-tunable dispersion, long well-controlled optical path lengths, and high Raman conversion efficiency, it is unable to preserve a circular polarization state, typically exhibiting weak linear birefringence. Here we report a revolutionary approach based on a helically twisted hollow-core photonic crystal fiber, which displays circular birefringence, thus robustly maintaining a circular polarization state against external perturbations. This makes it possible to generate pure circularly polarized Stokes and anti-Stokes signals by rotational Raman scattering in hydrogen. The polarization state of the frequency-shifted Raman bands can be continuously varied by tuning the gas pressure in the vicinity of the gain-suppression point. The results pave the way to a new generation of compact and efficient fiber-based sources of broadband light with a fully controllable polarization state.
Authors with CRIS profile
Philip St. John Russell
Lehrstuhl für Experimentalphysik (Alfried Krupp von Bohlen und Halbach-Professur)
Involved external institutions
Germany (DE)How to cite
APA:
Davtyan, S., Novoa, D., Chen, Y., Frosz, M.H., & Russell, P.S.J. (2019). Polarization-Tailored Raman Frequency Conversion in Chiral Gas-Filled Hollow-Core Photonic Crystal Fibers. Physical Review Letters, 122(14). https://dx.doi.org/10.1103/PhysRevLett.122.143902
MLA:
Davtyan, S., et al. "Polarization-Tailored Raman Frequency Conversion in Chiral Gas-Filled Hollow-Core Photonic Crystal Fibers." Physical Review Letters 122.14 (2019).
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