title: Dynamic gain aperture modelocking in picosecond regime based on cascaded second-order nonlinearity.
abstract: The operation of a cascaded second-order mode-locked Nd:YVO4laser has been investigated considering it as a soft-aperture Kerr lens type and using complex beam parameters. A self consistent complex beam propagation method is used to incorporate the effect of cascaded Kerr nonlinearity on radially varying gain aperturing. The analysis deduces a stable pulsewidth of ~9.5 ps which agrees well with the experimental value of 10.3 ps.
authors.forename: Shyamal
authors.initials: S
authors.lastname: Mondal
authors.forename: Shouvik
authors.initials: S
authors.lastname: Mukherjee
authors.forename: Satya Pratap
authors.initials: SP
authors.lastname: Singh
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Rand
authors.forename: Sayantan
authors.initials: S
authors.lastname: Bhattacharya
authors.forename: Amit C
authors.initials: AC
authors.lastname: Das
authors.forename: Prasanta Kumar
authors.initials: PK
authors.lastname: Datta