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Intracavity 1.549-μm pumped 1.634-μm Er:YAG lasers at 300 K

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2 Author(s)
Spariosu, Kalin ; Center for Laser Studies, Univ. of Southern California, Los Angeles, CA, USA ; Birnbaum, M.

A novel method of generating 1.634-μm laser action from Er:YAG crystals pumped intracavity by an Er:glass laser emitting at 1.549 μm is described. Operation of the Er:glass laser at 1.549 μm (red shifted from the standard 1.532 μm, but with comparable output) at 500 K was obtained using mirrors with tailored spectral reflectivities. Several Er:YAG crystals ranging in concentration from 0.3% to 2% and in length from 1 cm to 8 cm were lased in the intracavity pumping arrangement. All the Er:YAG crystals lased in the 4I13/2 :Y1(6544 cm-1)-4I15/2:Z6(424 cm -1) 1.634-μm transition at 300 K

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Quantum Electronics, IEEE Journal of  (Volume:30 ,  Issue: 4 )