کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10641299 996610 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation
چکیده انگلیسی
Femtosecond optical pulse is used to generate narrow-band terahertz pulses depending on a quasi-phase-matched condition in periodically poled lithium niobate (PPLN) and stoichiometric lithium tantalate (PPSLT) crystals by difference frequency generation. The origin of narrow-band THz generation proved that the two frequency components of the fs pulse contribute to the frequency mixing. By cryogenic cooling, the absorption of THz waves in the crystal is significantly reduced which results in efficient THz generation. Simultaneously generated forward and backward THz pulses were 1.38 and 0.65 THz with as narrow as the bandwidth of 32 GHz in the PPSLT sample. Temperature dependence of the generated THz waveforms had good agreement with the simulation result using one dimensional plane-wave propagation model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 284, Issue 5, 1 March 2011, Pages 1395-1400
نویسندگان
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