کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1493559 1510785 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Asymmetric transmission and optical low-pass filtering in a stack of random media with graded transport mean free path
ترجمه فارسی عنوان
انتقال نامتقارن و فیلتر نزولی نوری در یک پشته رسانه ای تصادفی با انتقال معکوس به معنی مسیر آزاد است
کلمات کلیدی
انتقال نامتقارن، رسانه های تصادفی، فیلتر پایین گذر نوری، دیود نوری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• Fabrication of asymmetric random layered media.
• Demonstration of stop band filtering and asymmetric transmission.
• Functionality similar to optical diode is realized.

Light transport and the physical phenomena related to light propagation in random media are very intriguing, they also provide scope for new paradigms of device functionality, most of which remain unexplored. Here we demonstrate, experimentally and by simulation, a novel kind of asymmetric light transmission (diffusion) in a stack of random media (SRM) with graded transport mean free path. The structure is studied in terms of transmission, of photons propagated through and photons generated within the SRM. It is observed that the SRM exhibits asymmetric transmission property with a transmission contrast of 0.25. In addition, it is shown that the SRM works as a perfect optical low-pass filter with a well-defined cutoff wavelength at 580 nm. Further, the photons generated within the SRM found to exhibit functionality similar to an optical diode with a transmission contrast of 0.62. The basis of this functionality is explained in terms of wavelength dependent photon randomization and the graded transport mean free path of SRM.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 49, November 2015, Pages 15–20
نویسندگان
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