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Tm:fiber lasers: Recent developments and applications

Date Mo, 30.05.2011 - Mo, 30.05.2011
Time 16:45h
Speaker Peter Moulton, Vice-President and Chief Technology Officer, Q-Peak, Bedford, MA
Location ETHZ, Hönggerberg Campus, HCI J-7
Program Near-diffraction-limited, cw power levels from Tm-doped silica fiber lasers in the 2000‑nm wavelength region have now passed the 1 kW level, due to advances in fiber technology, pump lasers and associated pump-coupling fiber optics. Compared to the more common high-power Yb-doped fibers, Tm:silica fibers have several advantages, particularly with respect to limits set by fiber nonlinear effects such as stimulated Brillouin and Raman scattering. In this talk we will review the properties of Tm:silica and our understanding of the fundamental operational limits of the material compared to other fiber lasers.
In terms of applications, the large gain-bandwidth of the Tm:fiber laser can also support generation and amplification of ultrafast pulses, of interest for scientific uses and potentially to the construction of laser-driven electron accelerators. The long wavelength of the device allows pumping of a variety of nonlinear crystals, such as OP-GaAs, for generattion of wavelengths throughout the MWIR and LWIR wavelength ranges. In addition, the laser can pump MWIR, broadband laser media such as Cr:ZnSe, providing the analog to the green lasers used to pump Ti:sapphire. We will review these applications as well in the presentation.
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Video on the Ti:Sapphire laser
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