کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1536960 996577 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of Doppler broadening on dispersive and absorptive properties in atomic systems with two-photon interference
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
The effect of Doppler broadening on dispersive and absorptive properties in atomic systems with two-photon interference
چکیده انگلیسی

The effect of Doppler broadening on dispersive and absorptive properties is theoretically investigated in the hot four-level electromagnetically induced transparency (EIT) atomic systems with two different types of two-photon interference. It is found that the dispersive behavior for the probe in the ladder-type atomic system with two-photon constructive interference will be changed from anomalous in cold atoms to normal in hot atoms, and the three-peak absorptive profile is shifted to a broadened spectrum with a shallow dip at the line center; as a comparison, there is always normal dispersion at the line center for the invert-Y-type atomic system with two-photon destructive interference, but the EIT window in the absorptive profile will be narrowed to subnatural linewidth (0.01Γ) at room temperature. The physics of those two different behaviors are discussed and compared in the dressed-state theory.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 284, Issue 24, 1 December 2011, Pages 5697–5701
نویسندگان
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