4.4-μm Raman laser based on hollow-core silica fibre

Gladyshev, Alexey V.; Косолапов, А. Ф.; Khudyakov, M. M.; Yatsenko, Yuri; Kolyadin, A. N.; Krylov, A. A.; Pryamikov, Andrey D.; Biriukov, A. S.; Likhachev, Mikhail E.; Bufetov, I. A.; Dianov, E. M.

doi:10.1070/qel16400

Cited by 62 publications

(28 citation statements)

References 4 publications

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“…Radiation generation at longer wavelengths is a challenging problem as the material absorption of silica cladding in the 3÷5 µm spectral range grows dramatically from ~50 to ~50000 dB/m [13]. Nevertheless, due to an extremely low overlap of the optical mode with the cladding, revolver-type HCFs have recently enabled Raman generation at a wavelength as long as 4.42 µm [14]. So far, this wavelength is the longest to have been generated in gas-filled hollow-core silica fibers.…”

Section: Introductionmentioning

confidence: 99%

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Efficient 4.42 Μm Raman Laser Based on Hollow-Core Silica Fiber

Astapovich¹,

Kolyadin²,

Gladyshev³

et al. 2018

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In this paper we consider mid-infrared Raman lasers based on gas-filled hollowcore silica fibers and provide theoretical and experimental analysis of factors that limit the efficiency and output power of these lasers. As a result, we realized an efficient ns-pulsed 4.42 µm Raman laser based on an 1 H 2 -filled revolver silica fiber. Quantum efficiency as high as 36 % is achieved, and output average power as high as 250 mW is demonstrated. The possibilities of further improving the laser efficiency are discussed.

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Section: Introductionmentioning

confidence: 99%

“…So far, this wavelength is the longest to have been generated in gas-filled hollow-core silica fibers. However, the average power and quantum efficiency of the 4.42 µm Raman laser were limited to 30 mW and 15 %, respectively [14].…”

Section: Introductionmentioning

confidence: 99%

Efficient 4.42 Μm Raman Laser Based on Hollow-Core Silica Fiber

Astapovich¹,

Kolyadin²,

Gladyshev³

et al. 2018

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“…We experimentally demonstrated [17] the realization of RF with geometry close to optimal for RHL. The assembled RHL generates 250 mW at a wavelength of 4.4 μm with quantum efficiency of 36%.…”

Section: Discussionmentioning

confidence: 99%

The Design Optimization and Experimental Investigation of the 4.4 μm Raman Laser Basedon Hydrogen-filled Revolver Silica Fiber

Kolyadin¹,

Astapovich²,

Gladyshev³

et al. 2018

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Annotation. Optical properties of hollow-core revolver fibers are numerically investigated depending on various parameters: the hollow-core diameter, the capillary wall thickness, the values of the minimum gap between the capillaries, the number of capillaries in the cladding and the type of glass (silica and chalcogenide). Preliminary, similar calculations are made for simple models of hollow-core fibers. Based on the obtained results, the optimal design of the revolver fiber for Raman laser frequency conversion (1.56 μm → 4.4 μm in 1 H 2 ) was determined. As a result, efficient ns-pulsed 4.42 µm Raman laser based on 1 H 2 -filled revolver silica fiber is realized. Quantum efficiency as high as 36 % is achieved and output average power as high as 250 mW is demonstrated.

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“…Under a further increase in the wavelength, the reflection from the nested cladding capillaries cannot compensate for the growth of material loss and the total losses, correspondingly. That is why the first hydrogen Raman laser with a generation wavelength of 4.4 µm [31,43,44] was built using RF with one row of cladding capillaries. In [4], it was shown that RFs made of silica glass could transmit light up to wavelength of 8 µm with losses of about several tens of dB/m ( Figure 5).…”

Section: Rf With a Cladding Of Single And Double Nested Capillariesmentioning

confidence: 99%

“…In particular, stimulated Raman scattering (SRS) in gas-filled HCFs is used to generate mid-IR radiation. For example, 2.9-4.4 µm Raman lasers that are based on gas-filled revolver silica fibers have been recently demonstrated [43,44,52]. Such lasers in the NIR range have been implemented with fewer difficulties, since RF and HCF of other types have significantly lower optical losses in this region [51,53].…”

Section: Mid-infrared Raman Laser Based On Revolver Fibersmentioning

confidence: 99%

Revolver Hollow Core Optical Fibers

Bufetov

Косолапов

Pryamikov

et al. 2018

Fibers

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Revolver optical fibers (RF) are special type of hollow-core optical fibers with negative curvature of the core-cladding boundary and with cladding that is formed by a one ring layer of capillaries. The physical mechanisms contributing to the waveguiding parameters of RFs are discussed. The optical properties and possible applications of RFs are reviewed. Special attention is paid to the mid-IR hydrogen Raman lasers that are based on RFs and generating in the wavelength region from 2.9 to 4.4 μm.

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4.4-μm Raman laser based on hollow-core silica fibre

Cited by 62 publications

References 4 publications

Efficient 4.42 Μm Raman Laser Based on Hollow-Core Silica Fiber

Efficient 4.42 Μm Raman Laser Based on Hollow-Core Silica Fiber

The Design Optimization and Experimental Investigation of the 4.4 μm Raman Laser Basedon Hydrogen-filled Revolver Silica Fiber

Revolver Hollow Core Optical Fibers

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