A monolithic cladding pumped holmium-doped fibre laser

Hemming, Alexander; Simakov, Nikita; Davidson, Alan; Bennetts, Shayne; Hughes, Mark; Carmody, Neil; Davies, Phil; Corena, Len; Степанов, Д. В.; Haub, John; Swain, Robert; Carter, Adrian

doi:10.1364/cleo_si.2013.cw1m.1

Cited by 40 publications

(44 citation statements)

References 5 publications

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“…The corresponding slope efficiency with respect to absorbed pump power was 67%, which, to the best of our knowledge, represents the highest reported efficiency for a cladding pumped Holmium doped fibre laser [2,3,6].…”

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confidence: 69%

“…To further power scale Ho:fibre lasers, development of cladding-pumped fibre configuration is necessary and indeed has enabled scaling of such fibres to >400 W cw average power [2]. Conventional polymer-coated double-clad fibres have high inner-cladding propagation loss at the ~1.95 µm pump wavelength, resulting from the presence of OH -contamination and absorption in the polymer outer-cladding [3]. Here we report on optimisation of holmium all glass double-clad optical fibre in order to provide efficient operation for cladding pumping at 1.95µm.…”

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confidence: 99%

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Holmium doped fibre optimised for resonant cladding pumping

Shardlow

Simakov

Billaud

et al. 2017

2017 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)

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Two-micron lasers are of great interest in a range of applications, from spectroscopy and free space communications, to polymer machining and laser surgery. They also provide an important stepping-stone for wavelength generation further into the mid-infrared via nonlinear frequency conversion. Holmium doped fibre laser systems offer particularly attractive properties as they allow access to the atmospheric transmission window between 2.1 and 2.25 µm. Recently, operational efficiencies for resonantly pumped Ho:silica fibre close to the quantum limit have been demonstrated for core pumped lasers [1]. To further power scale Ho:fibre lasers, development of cladding-pumped fibre configuration is necessary and indeed has enabled scaling of such fibres to >400 W cw average power [2]. Conventional polymer-coated double-clad fibres have high inner-cladding propagation loss at the ~1.95 µm pump wavelength, resulting from the presence of OH -contamination and absorption in the polymer outer-cladding [3]. Here we report on optimisation of holmium all glass double-clad optical fibre in order to provide efficient operation for cladding pumping at 1.95µm. Fig. 1 End view of the in-house, all-glass, double-clad Ho-doped fibre, highlighting the different glass layers.

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confidence: 69%

mentioning

confidence: 99%

Holmium doped fibre optimised for resonant cladding pumping

Shardlow

Simakov

Billaud

et al. 2017

2017 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)

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“…Holmium-doped fibre lasers (HDFL) provide an attractive and power scalable alternative. Recently a robustly single-mode HDFL was demonstrated to operate at >400 W of average power at 2.12 µm [4].…”

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confidence: 99%

High gain holmium-doped fibre amplifiers

Simakov¹,

Li²,

Jung³

et al. 2016

Opt. Express

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Abstract:We investigate the operation of holmium-doped fibre amplifiers (HDFAs) in the 2.1 µm spectral region. For the first time we demonstrate a diode-pumped HDFA. This amplifier provides a peak gain of 25 dB at 2040 nm with a 15 dB gain window spanning the wavelength range 2030 -2100 nm with an external noise figure (NF) of 4-6 dB. We also compare the operation of HDFAs when pumped at 1950 nm and 2008 nm. The 1950 nm pumped HDFA provides 41 dB peak gain at 2060 nm with 15 dB of gain spanning the wavelength range 2050 -2120 nm and an external NF of 7-10 dB. By pumping at the longer wavelength of 2008 nm the gain bandwidth of the amplifier is shifted to longer wavelengths and using this architecture a HDFA was demonstrated with a peak gain of 39 dB at 2090 nm and 15 dB of gain spanning the wavelength range 2050 -2150 nm. The external NF over this wavelength range was 8-14 dB. nm gain extension towards 1.7 μm for diode-pumped silica-based thulium-doped fiber 2016 Optical Society of America

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“…The ready availability and technology maturity of thulium silica fiber lasers has enabled in-band pumped holmium fiber lasers to achieve over 400 Watts [5], and a thulium microchip laser in-band pumped Ho: KLu(WO 4 ) 2 microchip laser achieve 84% slope efficiencies (P = 201 mW) [6].…”

Section: Introductionmentioning

confidence: 99%

Holmium-doped 21 μm waveguide chip laser with an output power > 1 W

et al. 2015

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Creative Commons LicensingOSA is aware that some authors, as a condition of their funding, must publish their work under a Creative Commons license. We therefore offer a CC BY license for authors who indicate that their work is funded by agencies that we have confirmed have this requirement. Authors must enter their funder(s) during the manuscript submission process. At that point, if appropriate, the CC BY license option will be available to select for an additional fee.Any subsequent reuse or distribution of content licensed under CC BY must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Abstract:We demonstrate the increasing applicability of compact ultra-fast laser inscribed glass guided-wave lasers and report the highest-power glass waveguide laser with over 1.1 W of output power in monolithic operation in the short-infrared near 2070 nm achieved (51% incident slope efficiency). The holmium doped ZBLAN chip laser is in-band pumped by a 1945 nm thulium fiber laser. When operated in an extended-cavity configuration, over 1 W of output power is realized in a linearly polarized beam. Broad and continuous tunability of the extended-cavity laser is demonstrated from 2004 nm to 2099 nm. Considering its excellent beam quality of M 2 = 1.08, this laser shows potential as a flexible master oscillator for single frequency and mode-locking applications.

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A monolithic cladding pumped holmium-doped fibre laser

Cited by 40 publications

References 5 publications

Holmium doped fibre optimised for resonant cladding pumping

Holmium doped fibre optimised for resonant cladding pumping

High gain holmium-doped fibre amplifiers

Holmium-doped 21 μm waveguide chip laser with an output power > 1 W

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