Topic
Pulse duration
About: Pulse duration is a research topic. Over the lifetime, 19429 publications have been published within this topic receiving 286507 citations.
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Esso1
TL;DR: In this article, normal moveout correction stretched a reflection pulse in such a way that the spectrum of the pulse is a linearly compressed version of the uncorrected pulse spectrum, and the amplitude of the spectrum is increased by the same factor that expresses the spectral compression.
Abstract: Using a synthetic seismogram as input, normal moveout correction stretches a reflection pulse in such a way that the spectrum of the pulse is a linearly compressed version of the uncorrected pulse spectrum. The amount of compression depends on t0, the source‐detector separation, velocity, and the rate at which velocity varies with t0. The amplitude of the spectrum is increased by the same factor that expresses the spectral compression. As a result, the summed pulse from a CDP stack is richer in low frequencies than one might anticipate and has a smaller signal‐to‐noise ratio than the square root of the number of traces in the stack.
133 citations
TL;DR: In this article, a terahertz pulse shaper based on optical rectification is proposed, which can arbitrarily control the chirality, phase, pulse duration and frequency of circularly polarized few-cycle TSPs.
Abstract: A terahertz pulse shaper based on optical rectification is proposed. The polarization of the terahertz pulses depends on the polarization selection rules for the rectification process in a GaP crystal. The terahertz pulse shaper can arbitrarily control the chirality, phase, pulse duration and frequency of circularly polarized few-cycle terahertz pulses.
133 citations
TL;DR: In this paper, high-power compression of femtosecond pulses is demonstrated in nonlinear bulk material and an energy output of ~100 μJ with a pulse duration of ≤ 24 fsec is produced at 630 nm, 4 orders of magnitude more energy than can be compressed in optical fibers.
Abstract: High-power compression of femtosecond pulses is demonstrated in nonlinear bulk material An energy output of ~100 μJ with a pulse duration of ≤24 fsec is produced at 630 nm, 4 orders of magnitude more energy than can be compressed in optical fibers The technique is simple and scalable to arbitrarily high pulse energies In addition, the flexibility in the choice of nonlinear media permits the compression method to be extended from the ultraviolet to the mid-infrared
133 citations
TL;DR: In this article, a review of the literature on pulse electrolysis is presented, where the theory of the method is reviewed and three independent parameters of pulse electrolyisation (pulse c.d., pulse length and cut-off time between two pulses) were varied within a wide range in the deposition of Cd (from an acid sulfate bath) and of Au (from a citric acid-cyanide bath with a Co additive).
133 citations
Patent•
06 Nov 1995
TL;DR: In this article, a seed laser beam with a short pulse duration was used to produce a high average power, high brightness solid state laser system, where a laser amplifier (24) amplifies the seed beam to produce an amplified pulse laser beam which is tightly focused to produce pulses with brightness levels in excess of 1011 Watts/cm2.
Abstract: A high average power, high brightness solid state laser system. We first produce a seed laser beam with a short pulse duration. A laser amplifier (24) amplifies the seed beam to produce an amplified pulse laser beam which is tightly focused to produce pulses with brightness levels in excess of 1011 Watts/cm2. Preferred embodiments produce an amplified pulse laser beam having an average power in the range of 1 kW, an average pulse frequency of 12,000 pulses per second with pulses having brightness levels in excess of 1014 Watts/cm2 at a 20 micrometers diameter spot which may be steered rapidly to simulate a larger spot size. Alternately, a kHz system with several (for example, seven) beams (from amplifiers arranged in parallel) can each be focused to 20 micrometers and clustered to create effective spot sizes of 100 to 200 micrometers. These beams are useful in producing X-ray sources for lithography.
132 citations