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Title: Synchronized and configurable source of electrical pulses for x-ray pump-probe experiments

Abstract

A method is described for the generation of software tunable patterns of nanosecond electrical pulses. The bipolar, high repetition rate (up to 250 MHz), fast rise time (<30 ps), square pulses are suitable for applications such as the excitation sequence in dynamic pump-probe experiments. Synchronization with the time structure of a synchrotron facility is possible as well as fine control of the relative delay in steps of 10 ps. The pulse generator described here is used to excite magnetic nanostructures with current pulses. Having an excitation system which can match the high repetition rate of a synchrotron allows for utilization of the full x-ray flux and is needed in experiments which require a large photon flux. The fast rise times allow for picosecond time resolution in pump-probe experiments. All pulse pattern parameters are configurable by software.

Authors:
; ; ; ;  [1];  [2];  [2]
  1. Department of Applied Physics, Stanford University, Stanford, California 94305 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20953455
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 78; Journal Issue: 5; Other Information: DOI: 10.1063/1.2735566; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; COMPUTER CODES; CONTROL; CURRENTS; EXCITATION; EXCITATION SYSTEMS; MAGNETIC MATERIALS; MHZ RANGE 100-1000; NANOSTRUCTURES; PHOTONS; PROBES; PULSE GENERATORS; PULSE RISE TIME; PULSES; PUMPS; SYNCHRONIZATION; SYNCHROTRON RADIATION; SYNCHROTRONS; TIME RESOLUTION; X RADIATION

Citation Formats

Strachan, J. P., Chembrolu, V., Yu, X. W., Tyliszczak, T., Acremann, Y., Advanced Light Source, Berkeley, California 94720, and PULSE Center, Stanford Linear Accelerator Center, Menlo Park, California 94025. Synchronized and configurable source of electrical pulses for x-ray pump-probe experiments. United States: N. p., 2007. Web. doi:10.1063/1.2735566.
Strachan, J. P., Chembrolu, V., Yu, X. W., Tyliszczak, T., Acremann, Y., Advanced Light Source, Berkeley, California 94720, & PULSE Center, Stanford Linear Accelerator Center, Menlo Park, California 94025. Synchronized and configurable source of electrical pulses for x-ray pump-probe experiments. United States. doi:10.1063/1.2735566.
Strachan, J. P., Chembrolu, V., Yu, X. W., Tyliszczak, T., Acremann, Y., Advanced Light Source, Berkeley, California 94720, and PULSE Center, Stanford Linear Accelerator Center, Menlo Park, California 94025. Tue . "Synchronized and configurable source of electrical pulses for x-ray pump-probe experiments". United States. doi:10.1063/1.2735566.
@article{osti_20953455,
title = {Synchronized and configurable source of electrical pulses for x-ray pump-probe experiments},
author = {Strachan, J. P. and Chembrolu, V. and Yu, X. W. and Tyliszczak, T. and Acremann, Y. and Advanced Light Source, Berkeley, California 94720 and PULSE Center, Stanford Linear Accelerator Center, Menlo Park, California 94025},
abstractNote = {A method is described for the generation of software tunable patterns of nanosecond electrical pulses. The bipolar, high repetition rate (up to 250 MHz), fast rise time (<30 ps), square pulses are suitable for applications such as the excitation sequence in dynamic pump-probe experiments. Synchronization with the time structure of a synchrotron facility is possible as well as fine control of the relative delay in steps of 10 ps. The pulse generator described here is used to excite magnetic nanostructures with current pulses. Having an excitation system which can match the high repetition rate of a synchrotron allows for utilization of the full x-ray flux and is needed in experiments which require a large photon flux. The fast rise times allow for picosecond time resolution in pump-probe experiments. All pulse pattern parameters are configurable by software.},
doi = {10.1063/1.2735566},
journal = {Review of Scientific Instruments},
number = 5,
volume = 78,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}