نتایج جستجو برای: light dispersion

تعداد نتایج: 455082  

Journal: :Proceedings of the Japan Academy, Series B 2009

Journal: :IOP Conference Series: Materials Science and Engineering 2020

Journal: :Optics express 2003
Yimin Wang J Nelson Zhongping Chen Bibiana Reiser Roy Chuck Robert Windeler

The influence of depth dependent dispersion by the main component of biological tissues, water, on the resolution of OCT was studied. Investigations showed that it was possible to eliminate the influence of depth dependent dispersion by water in tissue by choosing a light source with a center wavelength near 1.0 microm. Ultrahigh resolution ophthalmic imaging was performed at this wavelength ra...

Journal: :Optics letters 2011
T Lauprêtre C Proux R Ghosh S Schwartz F Goldfarb F Bretenaker

We investigate experimentally the lifetime of the photons in a cavity containing a medium exhibiting strong positive dispersion. This intracavity positive dispersion is provided by a metastable helium gas at room temperature in the electromagnetically induced transparency regime, in which light propagates at a group velocity of the order of 10⁴ m·s⁻¹. The results definitely prove that the lifet...

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