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Proceedings Paper

Pulsed 2-micron lasers based on Tm3+-doped monoclinic double tungstate crystals
Author(s): X. Mateos; M. Segura; W. B. Cho; A. Schmidt; F. Rotermund; M. C. Pujol; J. J. Carvajal; M. Aguiló; F. Díaz; V. Panyutin; U. Griebner; V. Petrov
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Paper Abstract

Monoclinic crystals of Tm-doped KLu(WO4)2 were used to demonstrate pulsed laser operation near 2 μm. Passive Qswitching and passive mode-locking were the techniques employed to produce such laser pulses. For passive Qswitching we used an AlGaAs -based diode laser to pump the active elements and Cr:ZnSe and Cr:ZnS crystals as saturable absorbers. For passive mode-locking we used a Ti:sapphire laser as pump source and single-walled carbon nanotubes as saturable absorbers. In the former case, maximum pulse energies of 200 μJ for a pulse duration of 70 ns were achieved at a repetition rate of 3 kHz with Cr:ZnS saturable absorber, while in the latter case, ultrashort pulse durations of ~10 ps were measured with a maximum average power of 240 mW. In both laser regimes the oscillation wavelength was ~1945 nm.

Paper Details

Date Published: 26 May 2011
PDF: 9 pages
Proc. SPIE 8039, Laser Technology for Defense and Security VII, 803902 (26 May 2011); doi: 10.1117/12.886787
Show Author Affiliations
X. Mateos, Física i Cristal·lografia de Materials i Nanomaterials (Spain)
Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
M. Segura, Física i Cristal·lografia de Materials i Nanomaterials (Spain)
W. B. Cho, Ajou Univ. (Korea, Republic of)
A. Schmidt, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
F. Rotermund, Ajou Univ. (Korea, Republic of)
M. C. Pujol, Física i Cristal·lografia de Materials i Nanomaterials (Spain)
J. J. Carvajal, Física i Cristal·lografia de Materials i Nanomaterials (Spain)
M. Aguiló, Física i Cristal·lografia de Materials i Nanomaterials (Spain)
F. Díaz, Física i Cristal·lografia de Materials i Nanomaterials (Spain)
V. Panyutin, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
U. Griebner, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
V. Petrov, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)


Published in SPIE Proceedings Vol. 8039:
Laser Technology for Defense and Security VII
Mark Dubinskii; Stephen G. Post, Editor(s)

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