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Optimal design for broadband quasi-phase-matched second-harmonic generation using simulated annealing

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3 Author(s)
Jie Wu ; Dept. of Appl. Phys., Tokyo Univ., Japan ; Kondo, T. ; Ito, R.

We propose a modulation-optimization method for achieving broadband quasi-phase matching in second-harmonic generation devices with domain-inverted structures. Using simulated annealing, we optimize phase-matching curves tailored to practical purposes by appropriately choosing a cost function in the annealing process. Both the acceptance bandwidth and the conversion efficiency are significantly improved in comparison with conventional periodically domain-inverted devices

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Lightwave Technology, Journal of  (Volume:13 ,  Issue: 3 )