Double Gires-Tournois interferometer negative-dispersion mirrors for use in tunable mode-locked lasers

Publication Type
Journal Article
Year of Publication
2000
Authors
Golubovic, B
Austin, RR
Steiner-Shepard, MK
Reed, MK
Diddams,S. A
Jones,D. J
Van Engen, AG
Name of Publication
Optics Letters
Volume
25
Pagination
275 - 277
Issue
4
Date Published
2000/02/15/
ISBN Number
0146-9592
Keywords
femtosecond lasers, pulses, ti-sapphire laser
Abstract

We report the implementation and operation of novel superkigh-reflectivity negative-dispersion dielectric mirrors for use in tunable ultrafast laser systems. The mirror structure is divided into two distinct regions: an underlying superkigh-reflectivity dielectric quarter-wavelength stack and an overlying negative-dispersion section consisting of only a few layers and forming simple multiple Gires-Tournois interferometers. The example that we present was designed for operation from 800 to 900 nm and has a near-constant group-delay dispersion of -40 fs(2) and a peak reflectivity greater than 99.99%. We show a comparison of the predicted and the measured mirror performance and application of these mirrors in a mode-locked Ti:sapphire laser tunable from 805 to 915 nm. (C) 2000 Optical Society of America OCIS codes: 320.7090, 320.7160, 140.4050, 310.1620, 320.5540.