Results 171 to 180 of about 18,351 (310)

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

Preliminary Evaluation of Thulium Doped Fiber Laser in Pig Model of Liver Surgery. [PDF]

Biomed Res Int, 2018
Janeczek M, Świderski J, Czerski A, Żywicka B, Bujok J, Szymonowicz M, Bilewicz E, Dobrzyński M, Korczyński M, Chrószcz A, Rybak Z.   +10 more
europepmc   +1 more source

High‐Efficiency Graphene‐Silicon Slot‐Waveguide Microring Modulator at 1.5 and 2 µm Wavelength Bands

Laser &Photonics Reviews, EarlyView.
E/O modulators typically face a trade‐off between bandwidth and modulation efficiency. An integrated E/O modulator is presented that simultaneously achieves wideband, large bandwidth, and high modulation efficiency operation by embedding a partially overlapped double‐layer graphene on a compact silicon slot‐waveguide microring resonator.
Chao Luan, Deming Kong, Yong Liu, Yunhong Ding, Hao Hu   +4 more
wiley   +1 more source

Harnessing Optical Limiting in Saturable Absorbers for Reconfigurable Spectral Engineering of Ultrafast Fiber Lasers

Laser &Photonics Reviews, EarlyView.
Optical limiting in a nanomaterial‐polymer saturable absorber is harnessed as a functional intracavity degree of freedom, where pump‐controlled photothermal loss continuously reshapes the gain spectrum of rare‐earth ions, enabling non‐mechanical spectral engineering in an ultrafast fiber laser.
Maolin Dai, Weitao Wang, Masahiro Nomura, Sze Yun Set, Shinji Yamashita   +4 more
wiley   +1 more source

Configurable Er-doped core-pumped multi-element fiber amplifier

We demonstrated an Erbium-doped multi-element-fiber amplifier extending the bandwidth at shorter wavelengths in C-band. Each fiber-element provides a maximum gain of 36dB and NF <4dB.
Thipparapu, N.K., May-Smith, T., Jain, S., Sahu, J.K.   +3 more
core  

Excited state absorption measurement in bismuth-doped silicate fibers for use in 1160nm fiber laser

, 2008
Bi-doped fiber lasers (BiDFLs) demonstrated so far have been limited to 1080 nm pumping band at which high power laser diodes (LDs) are not readily available. [1,2] Direct LD pumping will make the BiDFLs more compact and cost-effective.
Kalita, M.P., Nilsson, J., Oton, C.J., Sahu, J., Yoo, S.   +4 more
core  

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Up to 64QAM (30 Gbit/s) directly-modulated and directly detected OFDM at 2µm wavelength

We report a novel OFDM-transmitter operating in the emerging 2µm waveband. Sub-FEC limit transmission of a 32QAM signal over 500m of both solid and hollow-core fiber was achieved and the generation of 30Gbits 64QAM ...
Heidt, A., O'Carroll, J., Alam, S.U., Chen, Y., Li, Z., Richardson, D.J., Wheeler, N.V., Liu, Z., Poletti, F., Wooler, J.P., Petrovich, M.N., Kelly, B., Slavík, R., Phelan, R.   +13 more
core  

The Spectrum of Abnormal Tongue Movements: Review of Phenomenology, Etiology, and Differential Diagnosis

Movement Disorders Clinical Practice, EarlyView.
ABSTRACT Background Classifying abnormal tongue movements is challenging due to their varied presentations and limited visibility compared to other body parts. Accurate identification of the phenomenology guides physical examination and can point to specific diagnoses.
Nathaniel Bendahan, Seyed‐Mohammad Fereshtehnejad, Christos Ganos, Emily Swinkin, Anthony E. Lang   +4 more
wiley   +1 more source

Transcranial Pulse Stimulation Enhances Dexterity in Parkinson's Disease: A Randomized Sham‐Controlled Trial

Movement Disorders, EarlyView.
Abstract Background Ultrasound‐based neuromodulation, capable of reaching deep brain areas with high precision, represents cutting‐edge technology in non‐invasive brain stimulation and is investigated as a novel treatment for neurological and psychiatric disorders, including Parkinson's disease (PD).
Eva Matt, Nina Plischek, Michael Mitterwallner, Sonja Radjenovic, Alexandra Weber, Alina Domitner, Gregor Dörl, Anna Zettl, Sarah Osou, Anna Leitgeb, Agnes Santer, Viktoria Winkler, Julia Mandelburger, Heidemarie Zach, Roland Beisteiner   +14 more
wiley   +1 more source