کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1540480 | 996662 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Slow-light enhanced light-matter interactions with applications to gas sensing
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Optical gas detection in microsystems is limited by the short micron scale optical path length available. Recently, the concept of slow-light enhanced absorption has been proposed as a route to compensate for the short path length in miniaturized absorption cells. We extend the previous perturbation theory to the case of a Bragg stack infiltrated by a spectrally strongly dispersive gas with a narrow and distinct absorption peak. We show that considerable signal enhancement is possible. As an example, we consider a Bragg stack consisting of PMMA infiltrated by O2. Here, the required optical path length for visible to near-infrared detection (â¼760Â nm) can be reduced by at least a factor of 102, making a path length of 1Â mm feasible. By using this technique, optical gas detection can potentially be made possible in microsystems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 21, 1 November 2008, Pages 5335-5339
Journal: Optics Communications - Volume 281, Issue 21, 1 November 2008, Pages 5335-5339
نویسندگان
K.H. Jensen, M.N. Alam, B. Scherer, A. Lambrecht, N.A. Mortensen,