Electrical bandwidth testing of an AOTF transducer as a function of the optical diffraction efficiency

J. Vanhamel , Emmanuel Dekemper, Vitaly Borisovich Voloshinov, Eddy Neefs, Didier Fussen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

The performance of an acousto-optical tunable filter (AOTF) depends on several key parameters, such as the diffraction efficiency and the applied RF signal at the external network of the transducer. The latter has a specific bandwidth in which its efficiency is high. The goal of this paper is to experimentally investigate the relationship between the electrically matched RF bandwidth and the achieved diffraction efficiency, especially at the edges of the RF frequency band. The experiment revealed that the impedance matching is not completely correlated to the diffraction efficiency. Temperature measurements on the AOTF under test show that, at one edge of the tuning range, the RF signal is converted into a noninteracting acoustic mode.
Original languageEnglish
Pages (from-to)1361-1366
Number of pages6
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume36
Issue number8
DOIs
Publication statusPublished - 2019
Externally publishedYes

Keywords

  • AOTF
  • Transducer
  • RF
  • impedance matching

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