Low-threshold 1.9 µm Raman generation in microstructured hydrogen-filled hollow-core revolver fibre with nested capillaries

Efficient Raman laser based on the revolver hollow-core fibre (HCF) with a cladding formed by one layer of double nested capillaries was realized for the first time. Using hydrogen gas as a nonlinear medium we demonstrated single-pass single-stage 1064 nm-1907 nm Raman conversion with quantum effici...

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Bibliographic Details
Published in:Laser physics 2016-12, Vol.27 (2)
Main Authors: Gladyshev, A V, Kolyadin, A N, Kosolapov, A F, Yatsenko, Yu P, Pryamikov, A D, Biriukov, A S, Bufetov, I A, Dianov, E M
Format: Article
Language:English
Subjects:
fiber laser
hollow-core fibre
Raman conversion
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Summary:Efficient Raman laser based on the revolver hollow-core fibre (HCF) with a cladding formed by one layer of double nested capillaries was realized for the first time. Using hydrogen gas as a nonlinear medium we demonstrated single-pass single-stage 1064 nm-1907 nm Raman conversion with quantum efficiency as high as 40%. Improved mode confinement in the hollow core and low optical losses of the fibre enabled us to achieve Raman threshold as low as 270 W of peak power, which is 4-7 times improvement compared to previously reported results on 1.9 µm Raman generation in other types of HCFs. Further progress in revolver fibre technology could be a promising way to develop low-threshold, efficient, compact gas fibre lasers for various applications in the mid-infrared spectral range.
ISSN:1054-660X
1555-6611
DOI:10.1088/1555-6611/aa4f88