کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1494882 992923 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exploring a photonic quasi-crystal fiber for enhancing the efficiency of second harmonic generation: Modeling and analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Exploring a photonic quasi-crystal fiber for enhancing the efficiency of second harmonic generation: Modeling and analysis
چکیده انگلیسی


• Designed a 6-fold photonic quasi-crystal fiber for enhancing the efficiency of SHG.
• Optimized the wave-vector mismatch factor and overlap area.
• The wave-vector mismatch factor and overlap area are compared with those of PCF.
• An enhanced relative efficiency of 62.96% W−1 cm−2 has been reported.

In this paper, we explore the possibility of using a new type of microstructured optical fiber called photonic quasi-crystal fiber (PQF) for enhancing the efficiency of second harmonic generation (SHG). We model a six-fold, index guided, silica core PQF with a relative air hole diameter ranging from 0.1–0.5. We compute the various factors related to SHG, namely, phase mismatch factor, wave-vector mismatch, coherence length, quasi-phase matching length and overlap area. Of the various factors, we focus more on the role of wave-vector mismatch and overlap area as these parameters are highly sensitive to the variations in the geometrical arrangement of air holes in the cladding. Further, these parameters are required to be as minimum as possible for enhancing the efficiency of SHG. We find that the wave-vector mismatch factor does decrease for higher values of pitch and for lower values of relative air hole diameter. However, the overlap area increases for higher values of pitch and for lower values of relative air hole diameter. Therefore, we optimize the hitherto mentioned parameters such that the wave-vector mismatch is 0.145 μm−1 and the overlap area is 3.48 μm2. With these values, we demonstrate a relative efficiency of 62.96% W−1 cm−2 with the proposed PQF.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 35, Issue 12, October 2013, Pages 2132–2137
نویسندگان
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