Watt-level fiber-based femtosecond laser source tunable from 28 to 36  μm

Duval, Simon; Gauthier, Janel; Robichaud, Louis-Rafaël; Paradis, Pascal; Olivier, Michel; Fortin, Vincent; Bernier, Martin; Piché, Michel; Vallée, Réal

doi:10.1364/ol.41.005294

Cited by 127 publications

(46 citation statements)

References 20 publications

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“…Although most of the important species for biomedical applications have their strongest ro-vibrational transitions in the mid-IR, the OFCs are traditionally generated from the mode-locked lasers whose spectrum usually covers the visible and near-IR wavelength ranges, while reliable mode-lock laser emitting in mid-IR are still under development [77]. To reach the mid-IR wavelength range two main different approaches are most often used [78]: nonlinear frequency conversion such as optical parametric oscillation (OPO) or difference frequency generation (DFG) in combination with near-IR mode-locked lasers, or alternatively generating mid-IR comb directly from semiconductor lasers.…”

Section: Optical Frequency Comb Spectroscopymentioning

confidence: 99%

Laser spectroscopy for breath analysis: towards clinical implementation

et al. 2018

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Detection and analysis of volatile compounds in exhaled breath represents an attractive tool for monitoring the metabolic status of a patient and disease diagnosis, since it is non-invasive and fast. Numerous studies have already demonstrated the benefit of breath analysis in clinical settings/applications and encouraged multidisciplinary research to reveal new insights regarding the origins, pathways, and pathophysiological roles of breath components. Many breath analysis methods are currently available to help explore these directions, ranging from mass spectrometry to laser-based spectroscopy and sensor arrays. This review presents an update of the current status of optical methods, using near and mid-infrared sources, for clinical breath gas analysis over the last decade and describes recent technological developments and their applications. The review includes: tunable diode laser absorption spectroscopy, cavity ring-down spectroscopy, integrated cavity output spectroscopy, cavity-enhanced absorption spectroscopy, photoacoustic spectroscopy, quartz-enhanced photoacoustic spectroscopy, and optical frequency comb spectroscopy. A SWOT analysis (strengths, weaknesses, opportunities, and threats) is presented that describes the laser-based techniques within the clinical framework of breath research and their appealing features for clinical use.

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Section: Optical Frequency Comb Spectroscopymentioning

confidence: 99%

Laser spectroscopy for breath analysis: towards clinical implementation

et al. 2018

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“…This approach has led to generation of MIR radiation tunable from 3.0 to 4.4 μm with maximum power of 125 mW, but with no coherence at wavelengths shorter than 3.2 μm [19]. Recent reports show that broadband radiation in the 2.9 -3.6 μm wavelength range can be achieved directly from the SSFS in fluoride fibers [22]. However, this approach requires a powerful pump laser at 2.8 μm, and the longest achieved wavelength is 3.6 μm to date.…”

Section: Ocis Codes: (1403070) Infrared and Far-infrared Lasers; (19mentioning

confidence: 99%

High-power frequency comb source tunable from 27 to 42 μm based on difference frequency generation pumped by an Yb-doped fiber laser

Soboń¹,

Martynkien²,

Mergo³

et al. 2017

Opt. Lett.

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We demonstrate a broadband mid-infrared (MIR) frequency comb source based on difference frequency generation (DFG) in periodically poled lithium niobate (PPLN) crystal. Mid-infrared radiation is obtained via mixing of the output of a 125 MHz repetition rate Ybdoped fiber laser with Raman-shifted solitons generated from the same source in a highly nonlinear fiber. The resulting idler is tunable in the range of 2.7 -4.2 μm with average output power reaching 237 mW, and pulses as short as 115 fs. The coherence of the MIR comb is confirmed by spectral interferometry and heterodyne beat measurements. Applicability of the developed DFG source for laser spectroscopy is demonstrated by measuring absorption spectrum of acetylene at 3.0 -3.1 μm.

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“…6). Such small-core fibers could be suitable for the development of compact SC sources when considering recent sub-200 fs laser sources operating between 2.8 and 3.6 µm based on fluoride fiber with high peak powers [45,46]. In the following experiments, we make use of a suspended core fiber with 12.7 µm core diameter.…”

Section: Dispersion Of Suspended Core Fibersmentioning

confidence: 99%

Mid-infrared supercontinuum generation from 2 to 14 μm in arsenic- and antimony-free chalcogenide glass fibers

et al. 2019

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We demonstrate the fabrication of arsenic-and antimony-free chalcogenide glasses compatible with glass fiber processing. Optical fibers with distinct index profiles are presented and characterized, namely single material fibers with or without a suspended core and standard step-index fibers with varying core diameter. In addition, we evidence their potential for nonlinear photonic devices in the mid-infrared spectral region by means of supercontinuum generation experiments in the femtosecond regime. Spectral broadenings are obtained, extending on several octaves in the mid IR from 2 to 14 µm.

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Watt-level fiber-based femtosecond laser source tunable from 28 to 36 μm

Cited by 127 publications

References 20 publications

Laser spectroscopy for breath analysis: towards clinical implementation

Laser spectroscopy for breath analysis: towards clinical implementation

High-power frequency comb source tunable from 27 to 42 μm based on difference frequency generation pumped by an Yb-doped fiber laser

Mid-infrared supercontinuum generation from 2 to 14 μm in arsenic- and antimony-free chalcogenide glass fibers

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