نتایج جستجو برای: effective refractive index
تعداد نتایج: 1060496 فیلتر نتایج به سال:
Laser light scattering by a drying droplet of water fullerene suspension several micrometers in size was studied. Two light wavelengths were used. The evolution of refractive index and radius of the droplet was investigated. Resonant scattering was identified and analyzed. Some conclusions were drawn on the microscopic properties of the suspension. Supplementing measurements of samples obtained...
We demonstrate an alternative approach to tuning the refractive index of materials. Current methodologies for tuning the refractive index of a material often result in undesirable changes to the structural or optoelectronic properties. By artificially layering a transparent conducting oxide with a lower refractive index material the overall film retains a desirable conductivity and mobility whi...
Although light propagation in weakly modulated photonic crystals is basically similar to propagation in a diffraction grating in which conventional refractive index loses its meaning, we demonstrate that light propagation in strongly modulated two-dimensional ~2D!/3D photonic crystals becomes refractionlike in the vicinity of the photonic bandgap. Such a crystal behaves as a material having an ...
This paper presents an extension to the rectangular dielectric waveguide technique to obtain the permittivity of samples iteratively from the effective refractive index measurements by using the solution of the wave equation. The effective refractive index is presented for several samples in the 33 GHz to 50 GHz frequency range. The method is very fast and simple and provides an accuracy of bet...
در این پروژه خواص اپتیک غیرخطی تعدادی از بلورهای مایع نماتیک آلاییده بارنگینه مطالعه شده است. یکی از اهداف اصلی توسعه بلورهای مایع و رنگینه های جدید، مطالعه بر روی پارامترهای فیزیکی آنها برای بهبود و توسعه عملکرد انها، کاربردهای موجود و جستجوی کاربردهای جدید می باشد. علاوه بر بزرگ بودن غیرخطیت نور القایی در بلورهای مایع، با استفاده از یک میدان الکتریکی یا مغناطیسی با قدرت کم، این خواص نوری برا...
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