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Q-switched operation with carbon-based saturable absorbers in a Nd:YLF Laser

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Weigand Talavera, Rosa María and Sánchez Balmaseda, Margarita María and Guerra Pérez, José Manuel (2015) Q-switched operation with carbon-based saturable absorbers in a Nd:YLF Laser. Applied sciences, 5 (3). pp. 566-574. ISSN 2076-3417

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Official URL: http://dx.doi.org/10.3390/app5030566


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Abstract

We have numerically studied the influence of the absorption modulation depth of carbon-based saturable absorbers (graphene and carbon nanotubes (CNTs)) on the Q-switched regime of a diode-pumped Nd:YLF laser. A short-length cavity was used with an end mirror on which CNTs or mono- or bi-layer graphene were deposited, forming a saturable absorber mirror (SAM). Using a standard model, the generated energy per pulse was calculated, as well as the pulse duration and repetition rate. The results show that absorbers with higher modulation depths, i.e., graphene, deliver higher energy pulses at lower repetition rates. However, the pulse duration did not have a monotonic behavior and reaches a minimum for a given low value of the modulation depth typical of CNTs.


Item Type:Article
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© 2015 by the authors; licensee MDPI, Basel, Switzerland. This work has been financed by the Universidad Complutense de Madrid through Project GR3/14-910133.

Uncontrolled Keywords:Passive-mode-locking; Locked fiber laser; Mu-m; Pulse duration; Bulk laser; Nd-ylf; Graphene; Nanotubes
Subjects:Sciences > Physics > Optics
ID Code:34839
Deposited On:15 Dec 2015 13:52
Last Modified:15 Dec 2015 13:52

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