Thin film of J-aggregates as a saturable absorber for passive mode locking in a YAG:Nd~(3+) laser

摘要

Thin films of molecular J-aggregates of polymethyn dyes were obtained. Linear and nonlinear optical properties of the films were investigated. These thin films of J-aggregates were successfully used as saturable absorbers for passive mode-locking in YAG:Nd~(3+) laser for the first time. The reproduced generation of ultra short pulses with a duration of ～13 ps was obtained for two types of dyes forming the J-aggregates.