Results 161 to 170 of about 1,090,770 (243)

Transient Laser‐Induced Periodic Surface Structures Revealed by Time‐Resolved EUV Diffuse Scattering

Laser &Photonics Reviews, EarlyView.
The study shows that femtosecond laser pulses generate transient, LIPSS‐like surface patterns at fluences far below the damage threshold. Time‐resolved extreme ultraviolet scattering captures reciprocal space features that form within a few picoseconds and vanish on sub‐nanosecond timescales.
Dmitriy Ksenzov, Flavio Capotondi, Alexei A. Maznev, Filippo Bencivenga, Dieter Engel, Daniele Fausti, Laura Foglia, Raphael Gruber, Nicolas Jaouen, Mathias Kläui, Ivaylo Nikolov, Matteo Pancaldi, Emanuele Pedersoli, Bastian Pfau, Christian Gutt   +14 more
wiley   +1 more source

Noise Suppression via Gain‐Dispersion‐Managed Nonlinear Amplification in a High‐Power Er‐Fiber Laser

Laser &Photonics Reviews, EarlyView.
Gain‐dispersion‐managed nonlinear pre‐amplification simultaneously suppresses phase and intensity noise, enabling scalable high‐power fiber amplification. The system delivers 102.3 W linearly polarized pulses with 1.19 µJ energy at 85.69 MHz and compresses them to 380 fs. Near‐linear power scaling without evident saturation highlights a practical route
Mei Yang, Yuan Chen, Tingting Liu, Zhuoren Wan, Yan Dai, Suyang Xu, Zhengru Guo, Kun Huang, Ming Yan, Heping Zeng   +9 more
wiley   +1 more source

Theoretical chronobiology of circadian timing-gold mine or minefield? [PDF]

NPJ Biol Timing Sleep
Herzel H, Lilienthal S, Hammerstein P, Del Olmo M.   +3 more
europepmc   +1 more source

Reconfigurable Geometric Phase Matching by Multilayered Nonlinear Thin‐Film Crystals

Laser &Photonics Reviews, EarlyView.
The concept of geometric phase matching is demonstrated as a dynamically reconfigurable approach for tunable nonlinear wave mixing in multilayered nonlinear thin‐film crystals. Experimental results reveal full modulation in a bilayer structure and near‐perfect spin‐selective phase matching of second‐harmonic generation in an eight‐layer configuration ...
Danielle Ben‐Haim, Mai Tal, Xiaoxi Xu, Tal Ellenbogen   +3 more
wiley   +1 more source

Dynamically Tunable Exciton-Photon Coupling via Multi-Physics Field in Transition Metal Dichalcogenide Microcavities. [PDF]

Adv Sci (Weinh)
Zhang J, Qian W, Liu H, Tao G, Liu H, Zhang Y, Qi P, Fang Z.   +7 more
europepmc   +1 more source

Room‐Temperature Polariton Condensation Into Superscar Modes in Growth‐Defined Triangular Micro‐Prism Resonators

Laser &Photonics Reviews, EarlyView.
High‐Q superscar modes in growth‐defined triangular GaN micro‐prism resonators enable strong exciton–photon coupling and room‐temperature polariton condensation, offering a scalable platform for integrated III‐nitride polariton devices. ABSTRACT Group III‐nitride semiconductors are regarded as key materials for realizing polariton devices operating at ...
Chan‐Young Sung, Jungwon Kim, Daegwang Choi, Hyun Gyu Song, Yong‐Hoon Cho   +4 more
wiley   +1 more source

Optical properties of ZnMn_1.5Al_0.5O₄ spinel nanoparticles: direct band gap, low Urbach energy, and estimated nonlinear optical response. [PDF]

RSC Adv
Abdellaoui B, Amghar M, Hajlaoui ME, Bejar M, Costa BFO, Dhahri E.   +5 more
europepmc   +1 more source

Dual‐Comb Spectroscopy With Fully Controlled Repetition Rate and Offset Frequency of Quantum Cascade Laser Frequency Combs

Laser &Photonics Reviews, EarlyView.
Independent control of the repetition rate and offset frequency is demonstrated in quantum cascade laser frequency combs using radio‐frequency injection and thermal tuning. A revised comb model anchored at optical frequencies captures the unique behavior under radio‐frequency injection and enables precise frequency control.
Jie Liu, Philip Skochinski, Lawrence Hughes, Yamac Dikmelik, Kevin Lascola, Gerard Wysocki   +5 more
wiley   +1 more source

Bifurcation, quasi-periodic dynamics, chaos, and soliton waves in the van der Waals normal form for fluidized granular matter. [PDF]

Sci Rep
Alam MN, Haque MZ, Ahmed SF, Islam MN, Sim KS.   +4 more
europepmc   +1 more source

Real‐Time Observation of Soliton Buildup and Self‐Organization in a GHz Harmonic Mode Locked Fiber Laser

Laser &Photonics Reviews, EarlyView.
This image is an experimental recording of the buildup of harmonic mode‐locking in a fiber laser. The horizontal dimension corresponds to one cavity round trip, where the laser field intensity is displayed in a color scale. The vertical dimension is the evolution time in logarithmic scale, spanning from microseconds to seconds.
Qianqian Huang, Aurélien Coillet, Lilong Dai, Zinan Huang, Haochen Tian, Chengbo Mou, Philippe Grelu   +6 more
wiley   +1 more source