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and are focused on a helium gas jet to generate relativistic electron beams via the laser wakefield acceleration(LWFA) mechanism.A probe laser beam(位?=?800 nm) which is split-off the main beam is used to cross the plasma at the time of arrival of the main pulse,allowing online plasma ...
We describe LASER, a scalable response prediction platform currently used as part of a social network advertising system. LASER enables the familiar logistic regression model to be applied to very large scale response prediction problems, including ones beyond advertising. Though the underlying model is...
so I am having a lot of fun," Hanxin said. "There is also a real opportunity to contribute to all aspects of the product’s success. Because it is such a stable product, you can really see the impact you have when changes are made." ...
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t have any deck projects coming up, so I did a quick test run on a sunny day. In daylight conditions, the beam is hard to see with the naked eye, but with the help of the included green laser target card, I could pick up the faint line well enough that I could mark off the ...
A laser device includes a ridge waveguide having an active layer between upper and lower cladding layers. A ridge formed in the upper cladding layer defines the width of a light guiding region in the active layer, and is formed so that a portion of the light guiding region extends into the...
LASER COMPONENTS will be launching a new series of events – its first Infrared Sessions – on December 1 and 2, 2020. LC Talks will address a worldwide audience in a virtual format. In addition to experts from research and industry, students and interested newcomers are also welcome. In in...
We report the result on a novel online analysis of fast ions generated in an ultraintense laser-foil interaction. Fast protons are observed by a time-of-flight (TOF) detector, which is precisely calibrated using proton beams from an ion accelerator as to its detection efficiency depending on ...
摘要: Device for online measurement of pulses (2) of a laser (1) comprising the laser (1) to be studied, further comprising a sensor (7) piezoelectric devoid of protective layer and having a frequency less than at least fifty times the inverse duration of the pulses resonance....