Time-resolved detection of x-ray generated pulses on coplanar stripline sensors

Stephen M. Durbin, Aamer Mahmoud, David Lubelski, Bernhard Adams

Research output: Chapter in Book/Report/Conference proceedingConference contribution


X-ray detectors have been developed to measure the time profile of synchrotron x-ray pulses by sampling electrical pulses traveling along coplanar striplines. Electro-optic techniques originally developed for characterizing sub-picosecond laser pulses have been adapted for ∼100 ps synchrotron pulses. The first approach samples a small part of the current across a photoconducting gap excited by a sub-ps laser pulse, while the second detects the transient electric field in the gap on a birefringent lithium tantalate substrate by measuring the field-induced rotation of optical polarization. Both have measured x-ray pulses with ∼50 ps time resolution, but the optical polarization approach demonstrated much better signal-to-noise. Materials explored include semi-insulating GaAs, ion-implanted GaAs, low-temperature GaAs, and an InGaAs photodiode device. Important differences between the response to laser and x-ray pulses have been discovered, in the search for improved time resolution.

Original languageEnglish
Title of host publication2015 IEEE SENSORS - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982028
Publication statusPublished - 31 Dec 2015
Event14th IEEE SENSORS - Busan, Korea, Republic of
Duration: 1 Nov 20154 Nov 2015


CountryKorea, Republic of



  • coplanar striplines
  • optoelectronic detection
  • x-ray detector

ASJC Scopus subject areas

  • Instrumentation
  • Electronic, Optical and Magnetic Materials
  • Spectroscopy
  • Electrical and Electronic Engineering

Cite this

Durbin, S. M., Mahmoud, A., Lubelski, D., & Adams, B. (2015). Time-resolved detection of x-ray generated pulses on coplanar stripline sensors. In 2015 IEEE SENSORS - Proceedings [7370599] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICSENS.2015.7370599