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Appl. Sci. 2015, 5(3), 566-574; doi:10.3390/app5030566

Q-Switched Operation with Carbon-Based Saturable Absorbers in a Nd:YLF Laser

1
Departamento de Óptica, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
2
Departamento de Física Aplicada III, Facultad de Informática, Universidad Complutense de Madrid, Avda. Prof. Santesmases s/n, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Malte C. Kaluza
Received: 17 August 2015 / Revised: 30 August 2015 / Accepted: 1 September 2015 / Published: 11 September 2015
(This article belongs to the Special Issue Diode-Pumped, Ultra-Short Pulse Lasers)
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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. View Full-Text
Keywords: diode-pumped lasers; Q-switched Nd:YLF laser; mode-locked Nd:YLF; graphene saturable absorber; carbon nanotube saturable absorber diode-pumped lasers; Q-switched Nd:YLF laser; mode-locked Nd:YLF; graphene saturable absorber; carbon nanotube saturable absorber
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Weigand, R.; Balmaseda, M.S.; Pérez, J.M.G. Q-Switched Operation with Carbon-Based Saturable Absorbers in a Nd:YLF Laser. Appl. Sci. 2015, 5, 566-574.

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