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We have developed an avalanche transistor-based pulse generator for driving the photocathode of an image intensifier, which comprises a mainly capacitive load on the order of 100 pF. The circuit produces flat-top pulses with rise time of 2…

仪器与探测器 · 物理学 2017-12-15 N. Beev , J. Keller , T. E. Mehlstäubler

Novel non-volatile memory devices based on ferroelectric thin films represent a promising emerging technology that is ideally suited for neuromorphic applications. The physical switching mechanism in such films is the nucleation and growth…

We describe a system for generating frequency-chirped and amplitude-shaped pulses on time scales from sub-nanosecond to ten nanoseconds. The system starts with cw diode-laser light at 780 nm and utilizes fiber-based electro-optical phase…

原子物理 · 物理学 2016-04-20 Charles E. Rogers , Phillip L. Gould

We present an approach to create pulse sequences extending beyond 150~picoseconds in duration, comprised of $100~\mu$J femtosecond pulses. A quarter of the pulse train is produced by a high-resolution pulse shaper, which allows full…

光学 · 物理学 2016-04-20 Martin Bitter , Valery Milner

Sub-10-attosecond pulses with half-cycle electric fields provide exceptional options to detect and manipulate electrons in the atomic timescale. However, the availability of such pulses is still challenging. Here, we propose a method to…

等离子体物理 · 物理学 2021-05-26 Yinren Shou , Ronghao Hu , Zheng Gong , Jinqing Yu , Jia erh Chen , Gerard Mourou , Xueqing Yan , Wenjun Ma

A picosecond pulse generator based on a pair of step recovery diodes (SRD), leveraging the transient response of the SRD PN junction and controlling the pulse width by a resistor, is proposed. We first explain the operation principle of the…

仪器与探测器 · 物理学 2017-10-17 Lianfeng Zou , Shulabh Gupta , Christophe Caloz

We propose an idea of an electronic multi-channel arbitrary digital sequence generator with temporal granularity equal to a single clock cycle. We implement the generator with 32 channels using a low-cost ARM microcontroller and demonstrate…

仪器与探测器 · 物理学 2018-09-21 Radim Hošák , Miroslav Ježek

A pulsed electron gun that can produce MHz repetition rate nanosecond pulses is described. The gun uses a Pierce grid in combination with an anode to extract electrons from a tungsten filament cathode. The electrons emerging from the anode…

仪器与探测器 · 物理学 2024-02-06 Andrew James Murray , Joshua Rogers

We present a versatile rf pulse control system that has been designed for multi-qubit quantum experiments. One instrument can be scaled to provide 32 channels of rf between 10 - 450 MHz. Synchronization can be achieved across multiple…

量子物理 · 物理学 2017-10-13 Ben Keitch , Vlad Negnevitsky , Weida Zhang

We report on the development of tunable few-cycle pulses with central wavelengths from 1.6 um to 2 um. Theses pulses were used as a proof of principle for high harmonic generation in atomic and molecular targets. In order to generate such…

Many experimental setups, such as for the calibration of photosensors, require light sources with sub-nanosecond timing precision. We present the design and evaluation of a brightness controlled, picosecond light pulser based on an…

仪器与探测器 · 物理学 2018-06-06 Martin Rongen , Merlin Schaufel

Bolometric experiments searching for rare events usually require an extremely low radioactive background to prevent spurious signals from mimicking those of interest, spoiling the sensitivity of the apparatus. In such contexts, radioactive…

仪器与探测器 · 物理学 2018-03-28 P. Carniti , L. Cassina , A. Giachero , C. Gotti , G. Pessina

A pulse generation scheme is proposed based on a structured resonance in a cavity where the non-conventional energy distribution is concentrated in its middle part. The cavity is first used as an oscillator during the energy charging step…

应用物理 · 物理学 2022-06-29 Dmitry Oshmarin , Alireza Nikzamir , Michael M. Green , Filippo Capolino

A new method to coherently control the electron dynamics is proposed using a few-cycle laser pulse in combination with a controlling field. It is shown that this method not only broadens the attosecond pulse bandwidth, but also reduces the…

原子物理 · 物理学 2015-04-06 Pengfei Lan , Peixiang Lu , Wei Cao , Yuhua Li , Xinlin Wang

Scattering of ultraintense short laser pulses off relativistic electrons allows one to generate a large number of X- or $\gamma$-ray photons with the expense of the spectral width---temporal pulsing of the laser inevitable leads to…

等离子体物理 · 物理学 2019-05-29 Daniel Seipt , Vasily Yu. Kharin , Sergey G. Rykovanov

Noninvasive brain stimulation can activate neurons in the brain but requires power electronics with exceptionally high power in the mega-volt-ampere and high frequencies in the kilohertz range. Whereas oscillator circuits offered only one…

医学物理 · 物理学 2025-03-11 Jinshui Zhang , Angel Peterchev , Stefan Goetz

A compact Marx generator was built to mimic a spark-gap Tesla transformer. The generator produced radio-frequency pulses of up to $\pm$200 kV and $\pm$15 A with a frequency between 110 to 280 kHz at a repetition rate of 120 Hz. The…

仪器与探测器 · 物理学 2024-05-24 B. H. McGuyer

We generate mode-locked picosecond pulses near 1110 nm by spectrally slicing and reamplifying an octave-spanning supercontinuum source pumped at 1550 nm. The 1110 nm pulses are near transform-limited, with 1.7 ps duration over their 1.2 nm…

Ultrashort burst laser pulses serve as powerful tools for precise laser processing, broadband ultrafast spectroscopy, and high-speed laser-scanning microscopy. However, the performance of conventional burst pulse generators is limited by…

Single flux quantum technology has the potential to enhance readout and control of superconducting quantum systems due to their low energy consumption, high speed, and cryogenic operating temperatures. Current cryogenic readout and control…

量子物理 · 物理学 2025-05-07 Gregory Cunningham , Yufeng Ye , Kaidong Peng , Alec Yen , Jessica Kedziora , Kevin P. O'Brien
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