نتایج جستجو برای: ultrafast phenomenon
تعداد نتایج: 170044 فیلتر نتایج به سال:
The capability of using ultrafast detection technologies for a fast analysis of biomolecular reactions has been explored. As an example, the ultrafast response of tetramethylrhodamine (TMR)-labeled bovine serum albumin (BSA) as a function of different extents in proteolytic cleavage was investigated. The authors compared 4 samples of masses differing over several orders of magnitude: untreated,...
Nondiffracting Bessel beams have been recently applied to single shot ultrafast laser processing of high aspect ratio nanochannels. We review the principles and benefits of nondiffracting Bessel beams for material processing, and we compare experimental results with numerical simulations. We show how the stationarity of nonlinear propagation of ultrafast laser pulses allows high aspect ratio ma...
The appropriate timing for imaging an object was discovered for a half-cycle terahertz (THz) pulse generated from a large-aperture photoconductive antenna. Two-dimensional THz imaging with single-shot detection was conducted. This enables observation of ultrafast phenomena at a frame rate of 1000 frames/s. ©2003 Optical Society of America OCIS codes: (320.7120) Ultrafast phenomena; (110.2970) I...
We demonstrated the highest femtosecond pulse energy from Erbium-doped fiber similariton or dissipative soliton oscillators (to our best knowledge). The output spectrum can be manipulated by waveplates and filter to support 86 fs transform-limited pulse. OCIS codes: (320.7090) Ultrafast lasers; (320.7110) Ultrafast nonlinear optics;
Ultrafast spectroscopy can provide unique tools to study and control electronic and structural dynamics on a femtosecond time scale. Here we study, the yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include ultrafast time resolv...
We generate carrier-envelope phase controlled attosecond continua up to 0.53 keV and corroborate the generation of reproducible and isolated attosecond SXR and water window pulses with duration of 280 as and 322 as, respectively. OCIS codes: (320.7090) Ultrafast lasers; (320.0320) Ultrafast optics; (260.6048) Soft x-rays
Battiato, M. 2013. Superdiffusive Spin Transport and Ultrafast Magnetization Dynamics: Femtosecond spin transport as the route to ultrafast spintronics. Acta Universitatis Upsaliensis. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1061. 62 pp. Uppsala. ISBN 978-91-554-8722-5. The debate over the origin of the ultrafast demagnetization has be...
The year 2015 marked the 25th anniversary of modern ultrafast optics, since the demonstration of the first Kerr lens modelocked Ti:sapphire laser in 1990 [a] heralded an explosion of scientific and engineering innovation. The impact of this disruptive technology extended well beyond the previous discipline boundaries of lasers, reaching into biology labs, manufacturing facilities, and even cons...
Ultrafast electron-based coherent radiation sources, such as free-electron lasers (FELs), ultrafast electron diffraction (UED) and Thomson-scattering sources, are becoming more important sources in today's ultrafast science. Photocathode laser is an indispensable common subsystem in these sources that generates ultrafast electron pulses. To fully exploit the potentials of these sources, especia...
Porous membranes with ultrafast ion permeation and high ion selectivity are highly desirable for efficient mineral separation, water purification, and energy conversion, but it is still a huge challenge to efficiently separate monatomic ions of the same valence and similar sizes using synthetic membranes. We report metal organic framework (MOF) membranes, including ZIF-8 and UiO-66 membranes wi...
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