Hybrid Yb:Y2O3 ceramic thin-rod femtosecond amplifier

Hybrid Yb:Y
₂
O
₃
ceramic thin-rod femtosecond amplifier is reported. By 4-pass amplification scheme, output power of 1.4 W with gain of 14 is achieved from 100 mW, 1033 nm, 30 MHz fiber seeder. The extracted gain spectrum shows gain bandwidth of about 5.0 nm centered at 1030.6 nm.