Highly efficient 1 GHz repetition-frequency femtosecond Yb3+:KY (WO4)2 laser

Scottish Universities Physics Alliance (SUPA), School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh, UK.
Optics Letters (Impact Factor: 3.29). 03/2012; 37(6):1133-5. DOI: 10.1364/OL.37.001133
Source: PubMed


We present a highly efficient, diode-pumped, femtosecond Yb3+:KY(WO4)2 (Yb:KYW) laser operating at a 1.024 GHz repetition rate. The output was centered at a wavelength of 1042 nm and had a bandwidth of 3.8 nm, leading to transform-limited pulses with durations of 278 fs determined by fringe-resolved autocorrelation measurements. The optical-to-optical conversion efficiency and slope efficiency were 61% and 69%, respectively, and the relative intensity noise was <0.1%.

6 Reads
Show more