Mid-IR supercontinuum generation in Ho-doped fiber amplifier

Kurkov, Andrei S; Kamynin, V. A.; Шолохов, Е.М.; Marakulin, A V

doi:10.1002/lapl.201110062

Cited by 60 publications

(33 citation statements)

References 20 publications

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“…By use of Holmium doping, oscillators with emission wavelengths above 2 µm and FWHM bandwidths of sub 10 nm, avoiding strong spectral absorption lines around 1.9 µm [6], have been investigated [7]. Another approach is to amplify the 2 µm region of a supercontinuum (SC) or Raman shifted seed source [8][9][10] or to generate SC in Thulium or Holmium doped fibers [11,12]. However, those amplifiers are mostly bound to wavelengths fairly below 2 µm or to the necessity of combinations of freespace and fiber optics.…”

Section: Introductionmentioning

confidence: 99%

All-PM coherent 205 µm Thulium/Holmium fiber frequency comb source at 100 MHz with up to 05 W average power and pulse duration down to 135 fs

Hoogland¹,

Thai²,

Sánchez³

et al. 2013

Opt. Express

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Abstract:We report on a dual output all-PM fiber laser system running at 100 MHz repetition rate offering coherent broadband and narrowband pulses centered at 2.05 µm with a spectral FWHM bandwidth of 60 nm and 1.5 nm at up to 360 mW and 500 mW, respectively. The broadband pulses are compressed down to 135 fs. The multi-stage double-clad amplifier based on Tm/Ho codoping is seeded by a supercontinuum light source, spanning from around 1 µm up to 2.4 µm.

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Section: Introductionmentioning

confidence: 99%

All-PM coherent 205 µm Thulium/Holmium fiber frequency comb source at 100 MHz with up to 05 W average power and pulse duration down to 135 fs

Hoogland¹,

Thai²,

Sánchez³

et al. 2013

Opt. Express

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“…A Ho-doped fiber amplifier was used to get nanosecond SC in the mid-IR range using all-fiber scheme, pumped by a Q-switched Er-doped fiber. The observed spectrum covers the spectral range from 2000 to 2500 nm with the power variation less than two decades, and average power of 0.4 W and pulse energy of 0.1 mJ have been demonstrated [27].…”

Section: Introductionmentioning

confidence: 88%

“…SC generation in mid-infrared wavelengths range above 2 μm, and in particular in the transparency window of the atmosphere between 2 and 2.5 μm, is an important goal of applied fiber optics due to numerous applications such as LIDAR systems [31], optical coherence tomography [32], optical clocks, trace gas sensing [33] and environmental monitoring, as well as military technologies. So far, the SC generation in this wavelength range was demonstrated by various methods, e.g., pumping of a Ho-doped fiber amplifier with intense Q-switched pulses at 1.6 μm resulted in an output SC power of 0.4 W [27], by amplification of gain-switched and mode-locked Tm/Ho-doped laser pulses of a complex shape and duration on a few microseconds level in a Tm-doped amplifier resulted in 2.17 W [34], by amplification of already generated with nanosecond EDFL SC in Tm-doped fiber amplifier [35], [36] resulted in up to 2.37 W of output power in the range of 1.95-2.52 μm at -10 dB level [37]. Nevertheless, a much simpler system in a MOPA configuration utilizing a mode-locked laser seed thus ensuring the SC stability and quality and based on Tm-doped fibers only has not been yet reported and will be described in the following section.…”

Section: Introductionmentioning

confidence: 99%

Mid-IR Ultrashort Pulsed Fiber-Based Lasers

Sorokina

Dvoyrin

Tolstik

et al. 2014

IEEE J. Select. Topics Quantum Electron.

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We review the latest breakthroughs in ultrafast fiber laser technology in the mid-IR wavelength range ≥2 μm. In particular, we concentrate on two novel laser systems built around passively mode-locked Tm:fiber lasers and fiber-based Cr:ZnS lasers, generating sub-100 femtosecond pulses and frequency combs with several Watt average output powers, hundreds of kilowatts peak powers and tens of nanojoule pulse energies. The tunability in the broad wavelength range between 2 and 2.5 μm as well as a simple all-silica-fiber design makes the Tm-fiber laser a truly unique broadband light source, particularly relevant for applications in gas sensing, fine material processing of semiconductors, composite materials, glasses and plastics, as well as for brain surgery, breath analysis, remote sensing and stand-off trace gas detection, especially in oil and gas industry. We also review techniques for coherent supercontinuum generation in the mid-IR, including a novel technique of direct generation of the supercontinuum in the fiber. A competing Watt level few-optical cycle Cr:ZnS laser operating at 2.4 μm (Patent pending, ATLA Lasers, Trondheim, Norway) is distinguished by extremely short pulse duration of only 41 fs, reliability and compactness. This unique ultrashort-pulsed laser generates intrinsically coherent frequency combs, which further extends the application range to high-resolution and high-sensitivity spectroscopy and optical clocks.

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“…Dispersion parameters are very important in the simulation of near-infrared SC generation. A system based on a Mach-Zehnder interferometer and SC white light are used for ultra-broadband and high precision dispersion measurement of the ytterbium-doped fiber [15], and the measured dispersion parameters of the 30/250μm double clad ytterbium-doped fiber used in the experiments in [9]- [10] are 2 β =1.5043e-26s 2 /m, 3 β =3.5969e-41s 3 /m, 4 β =3.0886e-56s 4 /m, 5 β =6.0954e-70 s 5 /m, 6 β =-1.3395e-84s 6 /m.The 3ns pump pulse used in [9]- [10] is replaced by a 50ps hyperbolic secant pulse with no initial chirp and 10kW peak power in the simulation in order to save calculation time. The shape of the gain spectrum is Lorentz with central wavelength at 1060nm and 40nm bandwidth.…”

Section: Theorymentioning

confidence: 99%

Numerical simulations of high power near-infrared supercontinuum generation from a nonlinear fiber amplifier

Song

Hou

Wang³

et al. 2013

SPIE Proceedings

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Photonic crystal fiber has been widely used in visible and near-infrared supercontinuum generation due to its flexible dispersion control and high nonlinearity. However, the maximum average output power of supercontinuum from a photonic crystal fiber has not exceed one hundred watt owing to the small core diameter of the photonic crystal fiber and the low coupling efficiency between the pump and the photonic crystal fiber. Recently, supercontinuum generation directly from a nonlinear fiber amplifier attracts lots of attention as a result of its simple structure and low splicing loss and many excellent results have been achieved either in low and high average power, which is proved to be a promising method to realize kilowatt level high power near-infrared supercontinuum. However, the numerical study on high power near-infrared supercontinuum generation from a nonlinear fiber amplifier has been rarely reported, so there is great necessity to carry out some theoretical study on it. In this paper the complex Ginzburg-Landau equation is used to describe the formation and propagation of high power near-infrared supercontinuum generation in a nonlinear fiber amplifier. The chromatic dispersion of the ytterbium-doped fiber is measured by a Mach-Zehnder interferometer. The roles of the small signal gain, input pulse width and initial chirp of the input pulse played on the continuum formation are analyzed in detail. The results are in good agreement with the experiments which can provide some theoretical guidance on future optimization of the flatness and width of the supercontinuum generation from a nonlinear fiber amplifier.

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Mid-IR supercontinuum generation in Ho-doped fiber amplifier

Cited by 60 publications

References 20 publications

All-PM coherent 205 µm Thulium/Holmium fiber frequency comb source at 100 MHz with up to 05 W average power and pulse duration down to 135 fs

All-PM coherent 205 µm Thulium/Holmium fiber frequency comb source at 100 MHz with up to 05 W average power and pulse duration down to 135 fs

Mid-IR Ultrashort Pulsed Fiber-Based Lasers

Numerical simulations of high power near-infrared supercontinuum generation from a nonlinear fiber amplifier

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