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 language | English |
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Pages (from-to) | 55-62 |
Number of pages | 8 |
Journal | Optics Express |
Volume | 27 |
Issue number | 1 |
DOIs | |
Publication status | Published - 7 Jan 2019 |