Diode pumped active-mirror Yb:YAG ceramic lasers

A highly stable laser diode pumped cryogenic Yb:YAG nanosecond regenerative amplifier

“…The quasi-three-level nature of this material can be overcome by using the material under cryogenic cooling conditions. The benefit of cooling Yb:YAG is a significant increase in the emission cross section [11]; further, the thermo-optic coefficient, thermal conductivity and thermo-optic coefficient are improved at low temperatures [12][13][14][15]; these factors are preferred especially for high-average-power operation.…”

Tape casting of a YAG/Yb:YAG/YAG transparent ceramic for a broadband tunable laser

“…has been recognized as a more attractive alternative for high-power or ultrashort-pulse laser operation due to its simple two-manifold energy levels and large emission cross-section, which is beneficial for the elimination of undesired effects such as up-conversion, cross relaxation and excited-state absorption [11][12][13][14][15] . In particular, the relatively broadband absorption cross-section of Yb ions enables high pump absorption efficiency from 941 to 970 nm, which is within the emission wavelength range of high-power, low-cost InGaAs laser diodes, thus making diode-pumped solid-state Yb-doped lasers attractive for practical high-power and high-energy applications [16][17][18] .…”