کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1538071 | 996602 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Negative refraction without absorption via both coherent and incoherent fields in a four-level left-handed atomic system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Negative refraction without absorption via both coherent and incoherent fields in a four-level left-handed atomic system Negative refraction without absorption via both coherent and incoherent fields in a four-level left-handed atomic system](/preview/png/1538071.png)
چکیده انگلیسی
This paper attempts a probe into negative refraction without absorption by means of an incoherent pump field and a strong coherent field coupling the dense four-level atomic system. With the application of the incoherent pump field to manipulate the populations in atomic levels and the variable strong coherent field to create quantum coherence, the constraint condition of two equal transition frequencies responding to the probe field in the atomic system isn't required. And these lead to the propagation transparency and strong magnetic response of the probe field, left-handedness with vanishing absorption in the atomic system. However, an excessive coherent field intensity would increase the absorption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 283, Issue 17, 1 September 2010, Pages 3301–3304
Journal: Optics Communications - Volume 283, Issue 17, 1 September 2010, Pages 3301–3304
نویسندگان
Shun-Cai Zhao, Zheng-Dong Liu, Qi-Xuan Wu,