Kerr-lens mode-locked Ti:sapphire laser with an additional intracavity nonlinear medium.
We demonstrate a Kerr-lens mode-locked Ti:sapphire laser with an additional Yb(3+) doped Potassium Yttrium Tungstate crystal (Yb:KYW) in the laser cavity, where not only the pump threshold to start mode-locking but also the stable regions to maintain mode-locking can be well-controlled by varying the position of Yb:KYW nearby the confocal focus to change the intracavity Kerr-effects. The pump threshold is reduced down to 800 mW to start the mode-locking operation, which is about 27% less than that for a Ti:sapphire laser without an additional Yb:KYW.
Han
Xiaohong
X
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China.
Zeng
Heping
H
D000537:Aluminum Oxide; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D007909:Lenses; D017711:Nonlinear Dynamics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014025:Titanium
D014025:Titanium; D000537:Aluminum Oxide