Loading…

Generation of sub-20-fs pulses from a graphene mode-locked laser

We demonstrate, what is to our knowledge, the shortest pulses directly generated to date from a solid-state laser, mode locked with a graphene saturable absorber (GSA). In the experiments, a low-threshold diode-pumped Cr :LiSAF laser was used near 850 nm. At a pump power of 275 mW provided by two pu...

Full description

Saved in:
Bibliographic Details
Published in:Optics express 2017-02, Vol.25 (3), p.2834-2839
Main Authors: Canbaz, Ferda, Kakenov, Nurbek, Kocabas, Coskun, Demırbas, Umıt, Sennaroglu, Alphan
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We demonstrate, what is to our knowledge, the shortest pulses directly generated to date from a solid-state laser, mode locked with a graphene saturable absorber (GSA). In the experiments, a low-threshold diode-pumped Cr :LiSAF laser was used near 850 nm. At a pump power of 275 mW provided by two pump diodes, the Cr :LiSAF laser produced nearly transform-limited, 19-fs pulses with an average output power of 8.5 mW. The repetition rate was around 107 MHz, corresponding to a pulse energy and peak power of 79 pJ and 4.2 kW, respectively. Once mode locking was initiated with the GSA, stable, uninterrupted femtosecond pulse generation could be obtained. In addition, the femtosecond output of the laser could be tuned from 836 nm to 897 nm with pulse durations in the range of 80-190 fs. We further performed detailed mode locking initiation tests across the full cavity stability range of the laser to verify that pulse generation was indeed started by the GSA and not by Kerr lens mode locking.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.002834