Open AccessChaos suppression in a Nd:YVO_4 laser by biharmonical pump modulation
Author(s) -
Ming Wei,
Chih Chang Hsu,
Han Hui Huang,
Hsiao Hua Wu
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.019977
Subject(s) - optics , physics , modulation (music) , laser , waveform , chaotic , phase modulation , frequency modulation , signal (programming language) , optical chaos , phase (matter) , semiconductor laser theory , phase noise , acoustics , telecommunications , computer science , quantum mechanics , radio frequency , voltage , artificial intelligence , programming language
This work demonstrates the suppression of chaos in a Nd:YVO(4) laser by biharmonical pump modulation (the first for chaos-inducing and the second for chaos-suppressing). The laser exhibits chaotic behavior when only the first signal is applied for pump modulation and its frequency is adjusted close to the relaxation-oscillation frequency. Adding the second signal with subhamonic and a specific phase difference to the first modulation signal will reshape the modulated waveform of the pump beam to suppress the aforementioned chaotic behavior. The initial phase of the second harmonic perturbation plays an important role in the suppression of chaos. This result is confirmed by numerical simulation.