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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 17 — Sep. 1, 2014
  • pp: 5180–5183

Femtosecond pulse generation with voltage-controlled graphene saturable absorber

I. Baylam, M. N. Cizmeciyan, S. Ozharar, E. O. Polat, C. Kocabas, and A. Sennaroglu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 17, pp. 5180-5183 (2014)
http://dx.doi.org/10.1364/OL.39.005180


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Abstract

We report, for the first time to our knowledge, the demonstration of a graphene supercapacitor as a voltage-controlled saturable absorber for femtosecond pulse generation from a solid-state laser. By applying only a few volts of bias, the Fermi level of the device could be shifted to vary the insertion loss, while maintaining a sufficient level of saturable absorption to initiate mode-locked operation. The graphene supercapacitor was operated at bias voltages of 0.5–1V to generate sub-100 fs pulses at a pulse repetition rate of 4.51 MHz from a multipass-cavity Cr4+:forsterite laser operating at 1255 nm. The nonlinear optical response of the graphene supercapacitor was further investigated by using pump–probe spectroscopy.

© 2014 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.4236) Materials : Nanomaterials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 9, 2014
Manuscript Accepted: June 20, 2014
Published: August 27, 2014

Citation
I. Baylam, M. N. Cizmeciyan, S. Ozharar, E. O. Polat, C. Kocabas, and A. Sennaroglu, "Femtosecond pulse generation with voltage-controlled graphene saturable absorber," Opt. Lett. 39, 5180-5183 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-17-5180


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