Ceramic Cr:ZnS Laser Mode-Locked by Graphene

Tolstik, Nikolai; Sorokin, Evgeni; Sorokina, Irina T.

doi:10.1364/cleo_si.2014.stu2e.7

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…Though output powers up to 1 W have been demonstrated in mode-locked Cr:ZnS laser [3,4,7,9], operation in the gigahertz regime results in a reduced pulse energies and, thus, requires decreasing of output coupling to keep the intracavity pulse energy at the desirable level. We used an output coupler of 1.8% in this experiment, and the average output power was therefore limited at a 100-mW level.…”

Section: Resultsmentioning

confidence: 99%

Gigahertz femtosecond Cr:ZnS laser

Tolstik

Sorokin

Sorokina

2014

Advanced Solid State Lasers

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Section: Resultsmentioning

confidence: 99%

Gigahertz femtosecond Cr:ZnS laser

Tolstik

Sorokin

Sorokina

2014

Advanced Solid State Lasers

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“…However, it took a few more years to achieve the femtosecond regime, with the first ceramic Kerr-Lens mode-locked Cr:ZnSe laser to be demonstrated in 2010 [77] and a similar Cr:ZnS laser in 2013 [67]. Moreover, the remarkable success with the singlecrystalline Cr:ZnS laser led us to the development of an even more powerful ceramic Cr:ZnS laser producing 140-fs pulses with an average output power exceeding 1 W [78], ready for the real world applications. 1…”

Section: Germanate Fibers For Sc Generationmentioning

confidence: 99%

“…The spectral bandwidth of the laser emission was measured to be about 100 nm FWHM. More than 1 W of output power could be obtained with a pulse duration about 140 fs [78]. Table II summarizes the parameters of all Cr 2+ -based ultrashort-pulsed systems demonstrated to-date.…”

Section: Average Output Powermentioning

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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“…Cr 2+ doped ceramic ZnS has been successfully used for lasers in the 2-4 µm band [8]. Initially, confinement was provided by using femtosecond processing to define the boundaries of a waveguide [9,10] within a bulk sample, but new studies [11,12] suggest that vacuum-deposited thin films may be suitable for fabrication of waveguide or disk lasers.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optical response and structural properties of MBE-grown Fe:ZnS films

Polyakov

Karhu

Zamiri

et al. 2018

Opt. Mater. Express

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Fe-doped ZnS films of high optical quality were fabricated using vacuum vapor deposition. Preferential crystalline orientation and phase purity of the host ZnS films were increased by the addition of small amounts of Fe, and the spectral shape of the 2-4 µm absorption peak is maintained up to the highest concentration tested (9 at.% ). However, Raman shifts of the Fe:ZnS films indicate the inclusion of disordered material at high Fe concentrations, and below-gap optical Kerr effect measurements show an increase in χ (3) correlated with this data. Nonlinear optical properties of the films were also measured using the Z-scan method at 532 nm, and saturable absorption of the Fe-based intraband levels at 2.94 µm was confirmed. Spectroscopy and laser demonstration of a new class of gain media," IEEE J. Quantum Electron. 32, 885-895 (1996) The scherrer formula for x-ray particle size determination," Phys. Rev. 56, 978-982 (1939).

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Ceramic Cr:ZnS Laser Mode-Locked by Graphene

Abstract: We report a high-power graphene mode-locked ceramic Cr:ZnS-laser, producing 3.9 nJ, 140 fs pulses with 45 nm spectral bandwidth at 270 MHz repetition rate, at output power for the first time exceeding 1 W level.

Cited by 5 publications

References 8 publications

Gigahertz femtosecond Cr:ZnS laser

Gigahertz femtosecond Cr:ZnS laser

Mid-IR Ultrashort Pulsed Fiber-Based Lasers

Nonlinear optical response and structural properties of MBE-grown Fe:ZnS films

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