Yb3+激光材料在900~980 nm范围具有较强的吸收,能与高效的InGaAs激光二极管(波长为900~1100 nm)有效地耦合,且能级简单,抽运波长与振荡波长相近,量子效率高。这些优点十分有利于在1000 nm附近实现超快高功率激光输出。而随着高性能InGaAs激光二极管的发展和成本的降低,近年来, The Yb3 + laser material has strong absorption in the range of 900 ~ 980 nm, effectively couples with efficient InGaAs laser diode (with a wavelength of 900 ~ 1100 nm), and has the advantages of simple energy level, similar pumping wavelength and oscillation wavelength, high quantum efficiency . These advantages are very conducive to ultra-fast high-power laser output around 1000 nm. With the development of high performance InGaAs laser diode and the reduction of cost, in recent years,