Results 41 to 50 of about 1,876,370 (217)

Optimizing type-I polarization-entangled photons [PDF]

open access: yes, 2009
Optical quantum information processing needs ultra-bright sources of entangled photons, especially from synchronizable femtosecond lasers and low-cost cw-diode lasers.
Goggin, Michael   +2 more
core   +1 more source

Ultrafast lasers—reliable tools for advanced materials processing

open access: yesLight: Science & Applications, 2014
The unique characteristics of ultrafast lasers, such as picosecond and femtosecond lasers, have opened up new avenues in materials processing that employ ultrashort pulse widths and extremely high peak intensities.
K. Sugioka, Ya Cheng
semanticscholar   +1 more source

Solution-processed two-dimensional materials for ultrafast fiber lasers (invited)

open access: yesNanophotonics, 2020
Since graphene was first reported as a saturable absorber to achieve ultrafast pulses in fiber lasers, many other two-dimensional (2D) materials, such as topological insulators, transition metal dichalcogenides, black phosphorus, and MXenes, have been ...
Fu Bo   +7 more
doaj   +1 more source

CH3NH3PbI3 Perovskite Nanorods Saturable Absorber for Stable Ultra-Fast Laser

open access: yesIEEE Photonics Journal, 2022
In this paper, we propose a novel ultrafast laser with nanostructure CH3NH3PbI3 nanorods, yielding a higher modulation depth and lower optical loss. Our experiment is performed through nanopatterned CH3NH3PbI3 rods and an all-solid-state passive mode ...
Tenghu Cheng   +6 more
doaj   +1 more source

Design study of time-preserving grating monochromators for ultrashort pulses in the extreme-ultraviolet and soft X-rays [PDF]

open access: yes, 2017
The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser ...
Fabris, Nicola   +3 more
core   +3 more sources

Ultrafast Laser Welding of Silicon

open access: yesAdvanced Photonics Research, 2023
While ultrafast laser welding is an appealing technique for bonding transparent workpieces, it is not applicable for joining silicon samples due to nonlinear propagation effects which dramatically diminish the possible energy deposition at the interface.
Maxime Chambonneau   +4 more
openaire   +3 more sources

Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors [PDF]

open access: yes, 2001
We present the first demonstration of reproducible harmonic mode-locked operation from a novel design of monolithic semiconductor laser comprising a compound cavity formed by a 1-D photonic-bandgap (PBG) mirror.
Avrutin, E A   +5 more
core   +2 more sources

1.9 μm Few-Cycle Pulses Based on Multi-Thin-Plate Spectral Broadening and Nonlinear Self-Compression

open access: yesIEEE Photonics Journal, 2021
In attosecond and strong-field physics, the acquisition of few-cycle laser sources open up a new area. We report a nonlinear pulse compression technology combining multi-thin-plate spectral broadening and nonlinear self-compression that generates a 0.52 ...
Beijie Shao   +6 more
doaj   +1 more source

Frequency-Doubling of Femtosecond Pulses in “Thick” Nonlinear Crystals With Different Temporal and Spatial Walk-Off Parameters [PDF]

open access: yes, 2016
We present a comparative study on frequency-doubling characteristics of femtosecond laser pulses in thick nonlinear crystals with different temporal and spatial walk-off parameters. Using single-pass second harmonic generation (SHG) of 260 fs pulses at
Aadhi, A.   +5 more
core   +2 more sources

Ultrafast laser synthesis of zeolites

open access: yesAdvanced Materials
Research has demonstrated that zeolite nucleation and growth can be controlled by fine-tuning chemical composition, temperature, and pressure, resulting in structures with diverse porosities and functionalities. Nevertheless, current energy delivery methods lack the finesse required to operate on the femto- and picosecond timescales of silica ...
Galioglu, Sezin   +11 more
openaire   +3 more sources

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