AI Article Synopsis
- A stabilized single-frequency Brillouin fiber laser operating at 1.06 µm was successfully created using a highly nonlinear fiber ring cavity and a phase-locking loop.
- The experiment focused on evaluating stimulated Brillouin scattering efficiency across various germanosilicate core fibers, identifying a 21 mol.% core fiber as the best option for the laser.
- The results include a Stokes lasing threshold of 140 mW, with notable improvements in linewidth narrowing to below 1 kHz and reduced frequency noise compared to the original pump source.
Article Abstract
We experimentally demonstrate a stabilized single-frequency Brillouin fiber laser operating at 1.06 µm by means of a passive highly nonlinear fiber (HNLF) ring cavity combined with a phase-locking loop scheme. The stimulated Brillouin scattering efficiency is first investigated in distinct single-mode germanosilicate core fibers with increasing content. The most suitable fiber, namely, 21 mol.% core fiber, is used as the Brillouin gain medium in the laser cavity made with a 15-m-long segment. A Stokes lasing threshold of 140 mW is reported. We also show significant linewidth narrowing (below 1 kHz) as well as frequency noise reduction compared to that of the initial pump in our mode-hop free Brillouin fiber laser.
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| http://dx.doi.org/10.1364/AO.495877 | DOI Listing |
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