کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
851811 909339 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of thermal light source properties in two-photon subwavelength coincidence interference experiments
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effects of thermal light source properties in two-photon subwavelength coincidence interference experiments
چکیده انگلیسی

We perform two-photon coincidence subwavelength interference experiments from double slit using independent photons obtained from a pseudo-thermal light source produced by (i) slowly rotating ground glass (RGG) with turbid solution of a different density and (ii) RGG. The turbid solution is water solution containing 3 μm diameter polystyrene microspheres. It is found that the visibility of the obtained interference pattern decreases in first experiment with increasing the density of the turbid solution from N = 1010 spheres m−3 to N = 1014 spheres m−3. However, the results are reported here for the density of N = 1014 spheres m−3. The visibility obtained with RGG with turbid solution having N = 1014 spheres m−3is 23% which increases to 27% with RGG but the resolution decreases. The effect of coherence width of source in two-photon interference pattern is also studied with pseudo-thermal light obtained by RGG. It was observed that on increasing the coherence width the visibility of interference fringes increased and quality of the fringe reduced and when the coherence width was more then slit separation, in coincidence measurements, no interference pattern appeared. The results are used to explore the classical subwavelength interference nature with thermal light.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 122, Issue 2, January 2011, Pages 128–132
نویسندگان
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