Results 261 to 270 of about 7,801 (299)

Thulium fiber laser and application development

SPIE Proceedings, 2014
Within the past 10 years, thulium (Tm)-doped fiber lasers have emerged as a flexible platform offering high average power as well as high peak power. Many of the benefits and limitations of Tm:fiber lasers are similar to those for ytterbium (Yb)-doped fiber lasers, however the ~2 µm emission wavelength posses unique challenges in terms of laser ...
Lawrence Shah, Christian Gaida, Martin Gebhardt, Alex Sincore, Joshua D. Bradford, Nils Gehlich, Ilya Mingareev, Martin Richardson   +7 more
openaire   +2 more sources

Tunable thulium-doped all-fiber laser

IEEE Photonics Technology Letters, 1998
We demonstrate a tunable thulium-doped fiber ring laser wherein a single fused coupler acts simultaneously as the wavelength-division multiplexing for pump radiation, a lasing wavelength selective element, and output mirror. Temperature tuning of up to 2 nm//spl deg/C over a range of 40 nm and polarization tuning of over 100 nm within the spectral ...
R.L. Shubochkin, V.A. Kozlov, A.L.G. Carter, T.F. Morse   +3 more
openaire   +1 more source

Watt-level efficient 2.3  µm thulium fluoride fiber laser

Optics Letters, 2020
We report on an efficient mid-infrared thulium (Tm) fiber laser operating on the 3 H 4 → 3 H 5 transition and featuring an upconversion pumping scheme. This laser comprises a heavily T m
Tyazhev, Aleksey, Starecki, Florent, Cozic, Solenn, Loiko, Pavel, Guillemot, Lauren, Braud, Alain, Joulain, Franck, Tang, Mincheng, Godin, Thomas, Hideur, Ammar, Camy, Patrice   +10 more
openaire   +3 more sources

Q-switched thulium-doped photonic crystal fiber laser

Optics Letters, 2012
We report a novel, Tm-doped photonic crystal fiber (PCF) actively Q-switched oscillator that provides ~8.9 kW peak power with 435 µJ, 49 ns pulses at 10 kHz repetition rate at 2 μm wavelength. This fiber has a mode-field area >1000 μm2, the largest of any flexible PCF providing diffraction-limited beam quality to the best of our knowledge.
Pankaj, Kadwani, Norbert, Modsching, R Andrew, Sims, Lasse, Leick, Jes, Broeng, Lawrence, Shah, Martin, Richardson   +6 more
openaire   +3 more sources

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
openaire   +2 more sources

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

All fiber thulium-doped fiber laser pumped Q-switched Ho:YAP laser

SPIE Proceedings, 2017
The high power infrared 2μm lasers have been extensively investigated for a number of commercial, scientific and engineering applications, such as remote chemical sensing, medical diagnostics, eye-safe laser radar, and environmental monitoring. Furthermore, high-power 2μm lasers are effective pump sources of optical parametrical oscillators and optical
Ting Yu, Xisheng Ye, Zhongguo Yang, Xiaolong Chen, Wenbin Xia, Jiayang Zhang, Wei Zhang, Jianyu Chen, Jiliang Si, Weibiao Chen   +9 more
openaire   +1 more source

1931 nm Thulium MOPA Fiber Laser

Laser Congress 2024 (ASSL, LAC, LS&C)
A compact, high-power 1931 nm diode-pumped, all-fiber MOPA laser with up to 100 W of output power and narrow linewidth is demonstrated. The laser achieves a slope efficiency as high as 59 %.
Lautenschläger, Jan, Romano, Clément, Lorentz, Dominik, Schneider, Julian, Panitzek, Dieter, Rupp, Marius, Eichhorn, Marc, Kieleck, Christelle   +7 more
openaire   +2 more sources

Switchable multiwavelength thulium-doped fiber ring lasers

Optical Engineering, 2013
Two kinds of thulium-doped fiber ring lasers based on a spatial mode beating filter and comb filtering effect are presented and experimen- tally demonstrated, which all show multiwavelength laser spectrum around 2 μm. In the implementation of the first type of experiment configuration by the use of a piece of multimode fiber (MMF) as a spatial mode ...
Shui Zhao, Ping Lu, Deming Liu, Jiangshan Zhang   +3 more
openaire   +1 more source

Thulium fiber laser-pumped mid-IR OPO

SPIE Proceedings, 2008
Fiber lasers are advancing rapidly due to their ability to generate stable, efficient, and diffraction-limited beams with significant peak and average powers. This is of particular interest as fibers provide an ideal pump source for driving parametric processes.
Daniel Creeden, Min Jiang, Peter A. Budni, Peter A. Ketteridge, Scott D. Setzler, York E. Young, John C. McCarthy, Peter G. Schunemann, Thomas M. Pollak, Parviz Tayebati, Evan P. Chicklis   +10 more
openaire   +1 more source