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2/3 octave Si/SiO2 infrared dispersive mirrors open new horizons in ultrafast multilayer optics

  • Vladimir Pervak*
  • , Tatiana Amotchkina
  • , Qing Wang
  • , Oleg Pronin
  • , Ka Fai Mak
  • , Michael Trubetskov
  • *Corresponding author for this work
  • Ludwig Maximilian University of Munich
  • Max Planck Institute of Quantum Optics

Research output: Contribution to journalArticlepeer-review

Abstract

Dispersive mirrors operating in a broadband infrared spectral range are reported for the first time. The mirrors are based on Si/SiO2 thin-film materials. The coatings exhibit reflectance exceeding 99.6% in the spectral range from 2 to 3.2 µm and provide a group delay dispersion of −100 fs2 and −200 fs2 in this range. The fabricated mirrors are expected to be key elements of Cr:ZnS/Cr:ZnSe femtosecond lasers and amplifiers. The mirrors open a new avenue in the development of ultrafast dispersive optics operating in the infrared spectral range.

Original languageEnglish
Pages (from-to)55-62
Number of pages8
JournalOptics Express
Volume27
Issue number1
DOIs
Publication statusPublished - 7 Jan 2019

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