Abstract
In this paper, spectroscopy and laser results obtained with new active medium Yb,Ho:GGAG (gadolinium–gallium–aluminum–garnet) emitting laser radiation at 2.09 m and 2.94 m are shown. The absorption, emission cross-section, and radiative decay time for several energy levels Yb3+ (2F5/2), Ho3+ (5I6 and 5I7) are presented. Using longitudinal diode pumping the laser action at 2 m and 3 m together with the wavelength tunability at several spectral bands 2063–2113 nm, 2860 nm, and 2912–2942 nm were reached.
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