Thulium-doped fibre broadband source for spectral region near 2 micrometers

Písařík, Michael; Peterka, Pavel; Aubrecht, Jan; Cajzl, Jakub; Benda, Adam; Jeřábek, V.; Todorov, Filip; Podrazký, Ondřej; Honzátko, Pavel; Kašík, Ivan

doi:10.1515/oere-2016-0022

Cited by 17 publications

(12 citation statements)

References 42 publications

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“…The overall calculation time for the PB model had to reach a particular value of the residual, and this took a significantly longer time than the NU-PWr model. It is noted that for PB, the overlap integrals between the ion populations and the optical modes of pump, signal and idler are calculated over the rare earth-doped region according to equation (4). These integrals are updated along the fiber length, taking into account the ion population distributions.…”

Section: Resultsmentioning

confidence: 99%

“…Very recently a room temperature fiber laser operation up to 3920 nm has been demonstrated [3]. For operating wavelengths of up to 2000 nm, silica glass fiber based lasers can be used [4]. Fiber lasers operating at wavelengths from 2000 nm to 4000 nm are based on fluoride glass fibers; lanthanide ions that have been so far applied for doping fluoride glass fibers include erbium (III), holmium (III) and dysprosium (III) [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Inversionless amplification of light by molecules selectively oriented over states in the field of laser radiation

Shamshurin¹,

Kuzovatov²,

Tsipotan³

et al. 2018

Quantum Electron.

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Modeling and design of fiber lasers facilitate the process of their practical realization. Of particular interest during the last few years is the development of lanthanide ion-doped fiber lasers which operate at wavelengths exceeding 2000 nm. There are two main host glass materials considered for this purpose, namely fluoride and chalcogenide glasses. Therefore, this study concerns comparative modeling of fiber lasers operating within the infrared wavelength region beyond 2000 nm. In particular, the convergence properties of selected algorithms, implemented within various software environments, are studied with a specific focus on the central processing unit (CPU) time and calculation residual. Two representative fiber laser cavities are considered: one is based on a chalcogenide-selenide glass step-index fiber doped with trivalent dysprosium ions whilst the other is a fluoride step-index fiber doped with trivalent erbium ions. The practical calculation accuracy is also assessed by comparing directly the results obtained from the different models.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inversionless amplification of light by molecules selectively oriented over states in the field of laser radiation

Shamshurin¹,

Kuzovatov²,

Tsipotan³

et al. 2018

Quantum Electron.

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“…Two methods of increasing the bandwidth of Tm-doped fibers-based ASE sources were presented in ref. [ 78 ].…”

Section: Applications In Broadband Light Sources At Around 2-μm Wamentioning

confidence: 99%

Active Optical Fibers and Components for Fiber Lasers Emitting in the 2-μm Spectral Range

et al. 2020

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Laser sources emitting in the infrared range at around 2 µm are attracting great interest for a variety of applications like processing of transparent thermoplastic polymers in industry as well as plenty of applications in medicine, spectroscopy, gas sensing, nonlinear frequency conversion to the mid-infrared, to mention a few. Of late, fiber lasers compared to other kinds of lasers benefit from their all-fiber design, leading to a compact, robust, and well thermally manageable device. Particularly, thulium- and holmium-doped fiber lasers are the first choice in fiber lasers emitting light around 2 µm. In this paper, we give an overview of our recent results in the research on thulium- and holmium-doped optical fibers, fiber lasers, and related research topics in the 2-µm spectral range. In particular, we present, to our knowledge, the first results of improvement of pump absorption in double-clad fibers thanks to the fiber twist frozen during drawing. Finally, a brief demonstration of material processing by thulium all-fiber laser operating at 2 µm is presented.

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“…Optical fibers and fiber‐based coherent light sources have become increasingly attractive for a wide range of biomedical applications, such as surgical operations, monitoring and chemical analysis of tissues with minimal disruption of the skin or internal organs of the patient . However, several key issues in the in vivo application of optical fibers remain up to now unsolved.…”

Section: Introductionmentioning

confidence: 99%

In vivo testing of a bioresorbable phosphate‐based optical fiber

Podrazký

Peterka

Kašík

et al. 2019

Journal of Biophotonics

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Optical fibers have recently attracted a noticeable interest for biomedical applications because they provide a minimally invasive method for in vivo sensing, imaging techniques, deep‐tissue photodynamic therapy or optogenetics. The silica optical fibers are the most commonly used because they offer excellent optical properties, and they are readily available at a reasonable price. The fused silica is a biocompatible material, but it is not bioresorbable so it does not decompose in the body and the fibers must be ex‐planted after in vivo use and their fragments can present a considerable risk to the patient when the fiber breaks. In contrast, optical fibers made of phosphate glasses can bring many benefits because such glasses exhibit good transparency in ultraviolet‐visible and near‐infrared regions, and their solubility in water can be tailored by changing the chemical composition. The bioresorbability and toxicity of phosphate glass–based optical fibers were tested in vivo on male laboratory rats for the first time. The fiber was spliced together with a standard graded‐index multi‐mode fiber pigtail and an optical probe for in vitro pH measurement was prepared by the immobilization of a fluorescent dye on the fiber tip by a sol‐gel method to demonstrate applicability and compatibility of the fiber with common fiber optics.

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Thulium-doped fibre broadband source for spectral region near 2 micrometers

Cited by 17 publications

References 42 publications

Inversionless amplification of light by molecules selectively oriented over states in the field of laser radiation

Inversionless amplification of light by molecules selectively oriented over states in the field of laser radiation

Active Optical Fibers and Components for Fiber Lasers Emitting in the 2-μm Spectral Range

In vivo testing of a bioresorbable phosphate‐based optical fiber

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