We measured the self-starting threshold of passive Kerr-lens mode-locking dye lasers and Ti:sapphire lasers by varying the concentration of the intracavity dilute-dye saturable absorbers that start the mode locking. From the threshold absorber concentration, we determined the strength of the intracavity pulse-broadening effects that counteract the pulse-shortening mechanisms in the self-starting stage. Experimental results agree well with theories based on phase diffusion and mode pulling.
© 1994 Optical Society of America
Yuh-Fwu Chou, Jyhpyng Wang, Hsiao-Hua Liu, and Nai-Ping Kuo, "Measurements of the self-starting threshold of Kerr-lens mode-locking lasers," Opt. Lett. 19, 566-568 (1994)