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Chaos Suppression and Phase Locking in an  \hbox {Nd:YVO}_{4} Laser by Reshaping Pump Modulation With Dual Waveforms

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2 Author(s)
Ken-Chia Chang ; Dept. of Photonics, Nat. Cheng Kung Univ., Tainan, Taiwan ; Ming-Dar Wei

This paper demonstrated the suppression of chaos in an Nd:YVO4 laser by reshaping the pump modulation with dual waveforms. When the first sinusoidal modulation induced chaos, the second modulated signal reshaped the modulated profile to suppress the chaos. A chaos-suppressed route associated with double phase locking was observed as the modulation depth of the second modulation increased; the first phase locking accompanied the subharmonic oscillation of the output intensity, and the second phase locking regenerated the chaos. Varying the waveforms of the second modulation to be square, triangle, and sinusoidal reshapes the modulated profile to change the suppression region; therefore, the shape can be used as a parameter to control the dynamics. Numerical simulations were confirmed by the experimental results.

Published in:

Photonics Journal, IEEE  (Volume:5 ,  Issue: 1 )

Date of Publication:

Feb. 2013

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