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      Generation of Sub-20-fs Pulses From a Graphene Mode-Locked Laser

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      Author(s)
      Canbaz, F.
      Kakenov, N.
      Kocabas, C.
      Demirbas, U.
      Sennaroglu, A.
      Date
      2017
      Source Title
      Optics Express
      Print ISSN
      1094-4087
      Publisher
      OSA - The Optical Society
      Volume
      25
      Issue
      3
      Pages
      2834 - 2839
      Language
      English
      Type
      Article
      Item Usage Stats
      219
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      286
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      Abstract
      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 Cr3+:LiSAF laser was used near 850 nm. At a pump power of 275 mW provided by two pump diodes, the Cr3+: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. � 2017 Optical Society of America.
      Keywords
      Electromagnetic pulse
      Graphene
      Laser accessories
      Laser mode locking
      Locks (fasteners)
      Optical pumping
      Pulse repetition rate
      Pumping (laser)
      Saturable absorbers
      Solid state lasers
      Ultrashort pulses
      Average output power
      Femtosecond pulse generation
      Graphene saturable absorbers
      Kerr lens mode locking
      Mode-locked laser
      Pulse durations
      Pulse generation
      Repetition rate
      Mode-locked fiber lasers
      Permalink
      http://hdl.handle.net/11693/37032
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OE.25.002834
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      • Department of Physics 2550
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