1.
Opt Express
; 25(9): 10234-10240, 2017 May 01.
Article
in English
| MEDLINE
| ID: mdl-28468397
ABSTRACT
We report a challenging design, fabrication and post-production characterization problem of a dispersive mirror supporting the spectral range from 2000 nm to 2200 nm and providing a group delay dispersion of -1000 fs2. The absolute reflectance in the working range is over 99.95%. The reported mirror is a critical element for Tm and Ho based lasers and paves the way for the development of ultrafast 2 µm lasers with sub-100 fs pulse duration.