Results 151 to 160 of about 629 (208)

Femtosecond pulse amplification on a chip. [PDF]

Nat Commun
Gaafar MA, Ludwig M, Wang K, Wildi T, Voumard T, Sinobad M, Lorenzen J, Francis H, Carreira J, Zhang S, Bi T, Del'Haye P, Geiselmann M, Singh N, Kärtner FX, Garcia-Blanco SM, Herr T.   +16 more
europepmc   +1 more source

Revisiting the potential of upconversion nanoparticles in biomedical applications: Advances and emerging perspectives. [PDF]

Mater Today Bio
Ghorbanizamani F, Moulahoum H, Dmonte DJ, Deshmukh K.   +3 more
europepmc   +1 more source

Clinical analysis of percutaneous kidney-sparing surgery for upper tract urothelial carcinoma. [PDF]

BMC Urol
Tang S, Liu Z, Xiao R, Hao Y, Qiu M, Zhang H, Xiao C, Zhang S.   +7 more
europepmc   +1 more source

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Single-frequency thulium-doped distributed-feedback fiber laser

Optics Letters, 2004
We have successfully demonstrated a single-frequency distributed-feedback (DFB) thulium-doped silica fiber laser emitting at a wavelength of 1735 nm. The laser cavity is less than 5 cm long and is formed by intracore UV-written Bragg gratings with a phase shift. The laser is pumped at 790 nm from a Ti:sapphire laser and has a threshold pump power of 59
Søren, Agger, Jørn Hedegaard, Povlsen, Poul, Varming   +2 more
exaly   +3 more sources

Thulium-doped optical fibers for fiber lasers

Photonics, Devices, and Systems VII, 2017
We present preparation and characterization of thulium-doped silica-based optical fibers for fiber lasers. The fibers were prepared by modified chemical vapor deposition process and doped with alumina and thulium ions. Alumina co-doping was achieved through two different methods – solution doping and nanoparticle doping method.
Ivan Kašík, Václav Kubeček, Jan Mrázek, Jakub Cajzl, Pavel Honzátko, Ondřej Podrazký, Pavel Peterka, Jan Aubrecht, Michal Kamrádek   +8 more
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Monolithic thulium-doped fiber laser

Photonics, Devices, and Systems VII, 2017
In this contribution we report and discuss the results of laser characterizations of experimental thulium-doped optical fibers. These active fibers were fabricated in house and were tested in two laser systems to verify their characteristics. The first one, a monolithic fiber laser, was of great interest to us due to its potentially lower overall ...
Filip Todotov, Ivan Kašík, Jana Proboštová, Michal Kamrádek, Ondřej Podrazký, Pavel Honzátko, Pavel Peterka, Jan Aubrecht   +7 more
openaire   +1 more source

Thulium-doped ZBLAN fiber laser

SPIE Proceedings, 1999
The thulium-doped ZBLAN fiber laser is emitting visible radiation through an upconversion process which allows for the generation of hundreds of milliwatts of output power at 480 nm. The main features of this laser are presented and analyzed on the basis of an equation rate analysis.
Pierre Laperle, Real Vallee, Alain Chandonnet   +2 more
openaire   +1 more source

Bidirectional mode-locked thulium-doped fiber laser

Applied Optics, 2018
We report a bidirectional mode-locked thulium-doped fiber laser. Mode-locking is enabled by the combination of semiconductor saturable absorption and nonlinear polarization rotation. Two stable mode-locked picosecond pulse trains in opposite directions are generated with a fundamental repetition rate of ∼16.57  MHz.
Nurmemet Abdukerim, M. Imrul Kayes, Alexandre Rekik, Martin Rochette   +3 more
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Progress in thulium doped fiber lasers and aplifiers

SPIE Proceedings, 2012
We present results on the development of signal sources for the 2000 nm band. The ASE source is presented with a FWHM bandwidth of 70 nm and -20dB bandwidth of 229 nm with an integrated power of 7.5 mW. Narrow band lasers are presented made of a short piece of core-pumped thulium doped fiber and fiber Bragg gratings.
P. Honzátko, P. Vojtisek, B. Vitovec
openaire   +1 more source

Scaling Bottlenecks in Thulium-doped Fiber Lasers

Frontiers in Optics 2013, 2013
Thulium offers novel applications at 2 μm, and with continued developments, peak and average powers will increase to that of rival rare-earth dopants. Limitations that impede growth are namely; nonlinearities, thermal management, and fiberized components.
Alex Sincore, R. Andrew Sims, Christian Gaida, Pankaj Kadwani, Lawrence Shah, Martin C. Richardson   +5 more
openaire   +2 more sources