A wavefront analyzer for terahertz time-domain spectrometers

E. Abraham, M. Brossard, P. Fauche, M. Perrin, Krzysztof Iwaszczuk, Peter Uhd Jepsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

We report on the development of a terahertz wavefront sensor able to determine the optical aberrations of a terahertz time-domain spectrometer. The system measures point-by-point the amplitude and phase of the terahertz electric field in a given plane. From this measurement, we reconstruct the terahertz wavefront and calculate its Zernike coefficients. In particular, we especially show that the focus spot of the spectrometer suffers from optical aberrations such as remaining defocus, first and second order astigmatisms, as well as spherical aberration. This opens a route to wavefront correction for improved terahertz imaging and spectroscopy.
Original languageEnglish
Title of host publicationProceedings of the42nd International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherIEEE
Publication date2017
Pages1-1
ISBN (Print)9781509060498
DOIs
Publication statusPublished - 2017
Event42nd International Conference on Infrared, Millimeter, and Terahertz Waves - Cancun International Convention Center, Cancun, Mexico
Duration: 27 Aug 20171 Sep 2017

Conference

Conference42nd International Conference on Infrared, Millimeter, and Terahertz Waves
LocationCancun International Convention Center
CountryMexico
CityCancun
Period27/08/201701/09/2017
Series International Conference on Infrared, Millimeter and Terahertz Waves
ISSN2162-2027

Keywords

  • Laser beams
  • Optical imaging
  • Electric fields
  • Measurement by laser beam
  • Ultrafast optics
  • Adaptive optics

Cite this

Abraham, E., Brossard, M., Fauche, P., Perrin, M., Iwaszczuk, K., & Jepsen, P. U. (2017). A wavefront analyzer for terahertz time-domain spectrometers. In Proceedings of the42nd International Conference on Infrared, Millimeter, and Terahertz Waves (pp. 1-1). IEEE. International Conference on Infrared, Millimeter and Terahertz Waves https://doi.org/10.1109/IRMMW-THz.2017.8067219