Results 101 to 110 of about 9,667 (268)

From regulatory mechanisms to cutting‐edge applications: Research progress of ultrasound, electrical, magnetic, and optical stimulation in neural modulation

Journal of Intelligent Medicine, EarlyView.
Abstract In recent years, the clinical treatment and symptom management of neurological disorders have faced significant challenges due to the high complexity of the nervous system's structure and function. Against this backdrop, physical stimulation techniques have emerged as a vital complementary approach to traditional pharmacological treatments and
Wanying Li, Liqun Chen
wiley   +1 more source

Characteristics of Q-switched cladding-pumped ytterbium-doped fiber lasers with different high-energy fiber designs

, 2001
We theoretically and experimentally analyze Q-switched cladding pumped ytterbium-doped fiber lasers designed for high pulse energies. We compare the extractable energy from two high-energy fiber designs: (1) single- or few-moded low-NA large mode area ...
Alvarez-Chavez, J.A., Clarkson, W.A., Nilsson, J., Offerhaus, H.L., Turner, P.W., Renaud, Cyril C., Richardson, D.J., Grudinin, A.B.   +7 more
core   +1 more source

321W average power, 1GHz, 20ps 1060nm pulsed fiber MOPA source [PDF]

, 2005
Pulses from a gain-switched laser diode were amplified in a fiber MOPA system to produce in excess of 320W of average power in 20ps pulses at 1GHz repetition rate at ...
M. Ibsen, Nilsson, J., Y. Jeong, Dupriez, P., Ibsen, M., Piper, A., Richardson, D.J., M.N. Zervas, Malinowski, A., L.M.B. Hickey, J.K. Sahu, A. Piper, Jeong, Y., Hickey, L.M.B., J. Nilsson, D.J. Richardson, P. Dupriez, Sahu, J.K., A. Malinowski, Zervas, M.N.   +19 more
core   +1 more source

Local Effects of a 1940 nm Thulium-Doped Fiber Laser and a 1470 nm Diode Laser on the Pulmonary Parenchyma: An Experimental Study in a Pig Model. [PDF]

Materials (Basel), 2021
Janeczek M, Rybak Z, Rybak Z, Lipińska A, Bujok J, Czerski A, Szymonowicz M, Dobrzyński M, Świderski J, Żywicka B.   +9 more
europepmc   +1 more source

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

Thermal resilience of polymer-coated double-clad fiber

, 2009
Following the advance of ytterbium-doped fiber laser to kW-level cw-output power, there is a particular interest in using shorter fiber length with large cores since they mitigate detrimental nonlinear effect such as stimulated Raman and Brillouin ...
Jeong, Y., J. Nilsson, Nilsson, J., Codemard, C.A., Y. Jeong, Shirakawa, A., C.A. Codemard, A. Shirakawa, Sahu, J.K., Yoo, S., J.K. Sahu, S. Yoo   +11 more
core   +1 more source

Characterization of nonlinear switching in a figure-of-eight fiber laser using frequency-resolved optical gating [PDF]

, 1998
The measurement technique of frequency-resolved optical gating is applied to determine the nonlinear switching characteristics of a passively modelocked figure-of-eight erbium-doped fiber laser. By completely characterizing the intensity and phase of the
Barry, Liam P., Bollond, Paul G., Dudley, John M., Leonhardt, Rainer, Harvey, John D.   +4 more
core   +1 more source

Peak power scaling of thulium-doped ultrafast fiber laser systems

, 2022
Paper 93441N, 8 S.We investigate challenges for scaling the output peak power of thulium-doped fiber chirped-pulse amplification systems (FCPA) to and beyond the GW-level.
Gaida, Christian, Stutzki, Fabian, Limpert, Jens, Tünnermann, Andreas, Gebhardt, Martin, Jauregui, Cesar   +5 more
core   +1 more source

Stable Four-Wavelength Switchable Narrow-Linewidth Thulium-Holmium Co-Doped Fiber Laser Based on Dual-Cascaded PM-FBGs

IEEE Photonics Journal
This paper proposes a stable four-wavelength switchable narrow-linewidth thulium-holmium co-doped fiber laser based on dual-cascaded polarization-maintaining fiber Bragg gratings (PM-FBGs).
Chenhao Yu, Fengping Yan, Dandan Yang, Darui Xu, Yuezhi Cai, Haoyu Tan, Jiawen Liu, Jianan Xu, Ting Li   +8 more
doaj   +1 more source

Frontiers of Bright CEP‐Stable Broadband Infrared Sources

Laser &Photonics Reviews, EarlyView.
Bright CEP‐stable broadband infrared sources push the limits of ultrafast science by delivering exceptional brightness alongside few‐cycle durations and multi‐octave spectral coverage. This review highlights emerging architectures and nonlinear conversion strategies that scale power while preserving phase stability.
Ugaitz Elu, Jens Biegert
wiley   +1 more source