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Efficient tunable laser operation of Tm:KGd(WO4)2 in the continuous-wave regime at room temperature

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8 Author(s)
Petrov, V. ; Max-Born-Inst. for Nonlinear Opt. & Ultrafast Spectrosc., Berlin, Germany ; Guell, F. ; Massons, J. ; Gavalda, J.
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Tm:KGd(WO4)2 is studied as a three-level laser on the 3F43H6 transition and a tunable source in the 2-μm spectral range, operating at room temperature. An overall tunability extending from 1790 to 2042 nm is achieved with maximum output powers of 400 mW for an absorbed pump power of 1 W. Various doping levels, pump wavelengths and polarization configurations are compared and the advantages of the monoclinic double tungstates over other Tm-hosts are outlined.

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Quantum Electronics, IEEE Journal of  (Volume:40 ,  Issue: 9 )