کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1535434 1512626 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical analysis of broadband second harmonic generation using TIR-QPM in a parabolic profiled isotropic semiconductor slab
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Numerical analysis of broadband second harmonic generation using TIR-QPM in a parabolic profiled isotropic semiconductor slab
چکیده انگلیسی

We report second harmonic generation (SHG) with a flat wide bandwidth accompanied by good conversion efficiency in an isotropic semiconductor slab with a parabolic upper profile. The concept of SHG conversion stands on the principle of total internal reflection quasi-phase matching (TIR-QPM). A simulation has been performed using GaAs as the non-linear material, in the fundamental wavelength range of 6.8–10.8 μm, considering ppp polarization configuration. Optimized simulation results, after considering reflection and absorption losses, show a flatter bandwidth of 642 nm in a 36 mm slab in comparison to a dipped 3 dB bandwidth of 770 nm in an elliptically profiled isotropic slab as well as a steeper bandwidth of 187 nm in a tapered isotropic slab. The present simulation shows an acceptable conversion efficiency of 1.105%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 295, 15 May 2013, Pages 180–187
نویسندگان
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