Results 231 to 240 of about 136,350 (268)

Comparing Thulium Fiber Versus High-Power Holmium Laser Lithotripsy Combined with the Flexible and Navigable Suction Access Sheath in Flexible Ureteroscopy for Kidney Stone Disease: A Propensity Score Matched Analysis by the Global FANS Collaborative Group

Journal of endourology
Objective: We aim to evaluate stone-free rate (SFR) and complications after flexible ureteroscopy (F-URS) for kidney stones, using a flexible and navigable suction ureteral access sheath (FANS), comparing thulium fiber laser (TFL) and high-power holmium ...
V. Gauhar, O. Traxer, K. Fong, Christian Sietz, B. Chew, Saeed bin Hamri, M. İ. Gökçe, N. Gadzhiev, S. Yuen, V. Malkhasyan, D. Ragoori, Y. Tanidir, B. Somani, D. Castellani   +13 more
semanticscholar   +1 more source

All-fiber widely tunable thulium laser

SPIE Proceedings, 2016
We present results from an all-fibre thulium laser system that can be tuned to any wavelength between 1710 – 2110 nm, without using any moving mechanical parts. An Acousto-Optic Tunable Filter (AOTF) is used as the tuning element, which allows for the wavelength to be tuned in ~ 20 μs.
G. Stevens, T. Legg
openaire   +1 more source

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

Analytical Model of Thulium-Doped Fiber Laser Pumped by Two-for-One Process

Journal of Lightwave Technology
Analytical models of rare-earth-doped fiber lasers were proposed in the past as very efficient yet reliable alternative to comprehensive numerical models. Cross-relaxation in thulium-doped fiber lasers has a great impact on their efficiency through a two-
M. Grábner, B. Švejkarová, J. Aubrecht, P. Peterka   +3 more
semanticscholar   +1 more source

Comparison of holmium:YAG and thulium fiber lasers for lithotripsy

SPIE Proceedings, 2010
The Holmium:YAG laser is currently the most common laser lithotripter. However, recent experimental studies have demonstrated that the Thulium fiber laser is also capable of vaporizing urinary stones. The high-temperature water absorption coefficient for the Thulium wavelength (μ a = 160 cm -1 at λ = 1908 nm) is significantly greater than for the ...
Richard L. Blackmon, Pierce B. Irby, Nathaniel M. Fried   +2 more
openaire   +1 more source

Polarization Dynamics in Ultrafast Thulium Fiber Lasers

CLEO Pacific Rim Conference, 2018
Polarization dynamics in soliton mode-locked femtosecond thulium fiber lasers are presented that can lead to pulse modulation. A dual output pulse train with orthogonally polarized interlaced pulses is discussed.
Ahmet E. Akosman, Michelle Y. Sander
openaire   +1 more source

Mode-locked thulium-doped fiber laser using a stretched few-mode fiber as a saturable absorber

Laser physics
In this work, an all-fiber saturable absorber (SA) based on nonlinear multimode interference in a short few-mode fiber (FMF) was proposed. Saturable absorption in this all-fiber device was demonstrated with an absorption modulation depth and a saturation
Xiuqi Wang, Mengping Zhong, Huanhuan Li, Kunyang Wang, Can Li, Junjie Zhang, Shiqing Xu   +6 more
semanticscholar   +1 more source

Thulium:YAG laser: a good compromise between holmium:YAG and thulium fiber laser for endoscopic lithotripsy? A narrative review

World journal of urology, 2023
M. Chicaud, M. Corrales, S. Kutchukian, C. Solano, Luigi Candela, S. Doizi, O. Traxer, F. Panthier   +7 more
semanticscholar   +1 more source

Q-switched thulium-doped fiber laser

Optical Engineering, 1993
A tunable Q-switched thulium-doped single-mode silica fiber laser is presented for the first time. Its performance is analyzed as a function of pulse repetition rate and pumping power. The optimization of laser parameters resulted in 4 W/1 30 ns, 1 .92-jrm wavelength pulses generated at a 4-kHz repetition rate. From the measured values of small- signal
openaire   +1 more source