Results 51 to 60 of about 1,876,370 (217)

Avant-Garde Ultrafast Laser Writing [PDF]

open access: yesMATEC Web of Conferences, 2013
Ultrafast laser processing of transparent materials reveals new phenomena. Reviewed, are recent demonstrations of 5D optical memory, vortex polarization and Airy beam converters employing self-assembled nanostructuring, ultrafast laser calligraphy and polarization writing control using pulses with tilted front.
Kazansky, P.G.   +2 more
openaire   +3 more sources

Ultrafast Raman fiber laser: a review and prospect

open access: yesPhotoniX, 2022
Ultrafast Raman fiber laser has been proved to be an effective method to obtain ultrafast optical pulses at special wavelength. Yet, compared with conventional rare-earth doped counterparts, it is challenging for Raman fiber lasers to generate pulses ...
Jiaqi Zhou   +5 more
doaj   +1 more source

Terahertz four-wave mixing spectroscopy for study of ultrafast dynamics in a semiconductor optical amplifier [PDF]

open access: yes, 1993
Ultrafast dynamics in a 1.5-µm tensile-strained quantum-well optical amplifier has been studied by highly nondegenerate four-wave mixing at detuning frequencies up to 1.7 THz.
Dawson, Jay W.   +5 more
core   +1 more source

Graphene Mode-Locked Ultrafast Laser [PDF]

open access: yesACS Nano, 2010
Graphene is at the center of a significant research effort. Near-ballistic transport at room temperature and high mobility make it a potential material for nanoelectronics. Its electronic and mechanical properties are also ideal for micro and nanomechanical systems, thin-film transistors and transparent and conductive composites and electrodes. Here we
Sun Z   +8 more
openaire   +5 more sources

Sub-100-fs Ultrafast Fiber Laser Using Nonlinear Optical Fiber Systems: Perspectives and Challenges

open access: yesUltrafast Science
Sub-100-fs ultrafast fiber lasers are crucial light sources for various practical applications. Generating these lasers directly from fiber laser oscillators remain an important yet challenging task. Here, a comprehensive review is conducted on 2 general
Kuen Yao Lau   +5 more
doaj   +1 more source

Broadband saturable absorption in germanene for mode-locked Yb, Er, and Tm fiber lasers

open access: yesNanophotonics, 2022
Passively mode-locked lasers have been widely investigated as one of the effective methods to obtain ultrashort pulses. As an important part of passively mode-locked fiber lasers, the exploration of 2D material-based saturable absorber has become one of ...
Wang Qingbo   +7 more
doaj   +1 more source

SIMPEL: Circuit model for photonic spike processing laser neurons [PDF]

open access: yes, 2014
We propose an equivalent circuit model for photonic spike processing laser neurons with an embedded saturable absorber---a simulation model for photonic excitable lasers (SIMPEL).
Nahmias, Mitchell A.   +4 more
core   +3 more sources

Photonic crystal chips for optical interconnects and quantum information processing [PDF]

open access: yes, 2008
We have recently demonstrated a number of functional photonic crystals devices and circuits, including an ultrafast, room temperature, low threshold, nanocavity laser with the direct modulation speed approaching 1 THz, an all-optical switch controlled ...
Altug, Hatice   +5 more
core   +1 more source

Potential for ultrafast dynamic chemical imaging with few-cycle infrared lasers [PDF]

open access: yes, 2007
We studied the photoelectron spectra generated by an intense few-cycle infrared laser pulse. By focusing on the angular distributions of the back rescattered high energy photoelectrons, we show that accurate differential elastic scattering cross sections
Anh-Thu Le   +11 more
core   +3 more sources

Review on Principal and Applications of Temporal and Spatial Beam Shaping for Ultrafast Pulsed Laser

open access: yesPhotonics
Ultrafast or ultrashort pulsed lasers have become integral in numerous industrial applications due to their high precision, non-thermal interaction with materials, and ability to induce nonlinear absorption.
Jong Hyun Kim, Hae Woon Choi
doaj   +1 more source

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