title: Passive mode-locking of a diode-pumped Nd:YVO(4) laser by intracavity SHG in PPKTP.
abstract: Experimental results on passive mode-locking of a Nd:YVO(4) laser using intracavity frequency doubling in periodically poled KTP (PPKTP) crystal are reported. Both, negative cascaded chi((2)) lensing and frequency doubling nonlinear mirror (FDNLM) are exploited for the laser mode-locking. The FDNLM based on intensity dependent reflection in the laser cavity ensures self-starting and self-sustaining mode-locking while the cascaded chi((2)) lens process contributes to substantial pulse shortening. This hybrid technique enables generation of stable trains of pulses at high-average output power with several picoseconds pulse width. The pulse repetition rate of the laser is 117 MHz with average output power ranging from 0.5 to 3.1 W and pulse duration from 2.9 to 5.2 ps.
authors.affiliation: Department of Quantum Electronics, Faculty of Physics, Sofia University, 5 James Bourchier Blvd.,BG-1164 Sofia, Bulgaria.
authors.forename: Hristo
authors.initials: H
authors.lastname: Iliev
authors.forename: Danail
authors.initials: D
authors.lastname: Chuchumishev
authors.forename: Ivan
authors.initials: I
authors.lastname: Buchvarov
authors.forename: Valentin
authors.initials: V
authors.lastname: Petrov
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D007909:Lenses