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On the Q-switched operation of Titanium: sapphire lasers using a graphene-based saturable absorber mirror

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Weigand Talavera, Rosa María and Pinto, T. and Crespo, H. M. and Guerra, J. M. (2015) On the Q-switched operation of Titanium: sapphire lasers using a graphene-based saturable absorber mirror. Optics and laser technology, 72 . pp. 1-5. ISSN 0030-3992

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Official URL: http://dx.doi.org/10.1016/j.optlastec.2015.03.007


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Abstract

We numerically demonstrate Q-switched operation of Titanium:Sapphire lasers using mono and multilayer graphene, deposited on a totally reflecting end mirror as a saturable absorber. Output energies, pulse duration and repetition frequencies of the Q-switched pulse trains are given as a function of the pump intensity for different number of graphene layers and cavity lengths. For the geometries studied, pulses from 17 to 491 ns can be achieved, with energies ranging from 11 to 74 μJ and repetition rates from 0.06 to 2.5 MHz. These results can be useful for designing and building laser cavities for Q-switched and mode-locked operation in laser media with short lifetimes as Titanium:Sapphire.


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Additional Information:

© 2015 Elsevier Ltd. This work was partially supported by the projects Santander-UCM PR6/13-18875 and FIS2013-1709-P from MINECO. H. Crespo acknowledges Grant PTDC/FIS/122511/2010 from Fundaçâo para a Ciência e Tecnologia, Portugal, co-funded by COMPETE and FEDER. Support from the European Science Foundation through the SILMI programme (Super-intense laser-matter interactions), Grant 6658, is gratefully acknowledged.

Uncontrolled Keywords:Q-switch; Ti:S laser; Graphene-based saturable absorber
Subjects:Sciences > Physics > Optics
ID Code:29671
Deposited On:20 Apr 2015 12:47
Last Modified:21 Apr 2015 08:01

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