High peak power generation in thermally bonded Er3+, Yb3+:glass/Co2+: MgAl2O3 microchip laser for telemetry application

The highest ever reported peak power generation of 7.68 kW in thermally bonded active medium Er3+, Yb3+:glass with saturable absorber Co2+: MgAl2O3 was achieved. The sample was a quasi-continuous wave pumped by a fiber coupled laser diode operating at 975 nm wavelength. The generation threshold was 319 mW and slope efficiency was 9.63%. A comparative analysis of the generation of different output coupler transmissions is presented.