Photorefractive effect - Wikipedia
The photorefractive effect is a nonlinear optical effect seen in certain crystals and other materials that respond to light by altering their refractive index. [1] .
光折变效应 - 百度百科
光折变效应（photorefractive effect）是指一种特殊的光感生 折射率 变化现象。 入射光 将束缚在某些 晶体 或 有机物 里的杂质或缺陷形成的浅阱中的 载流子 （电子 或 空穴）激发出来，如果 光强 是不均匀的，光激发载流子将通过 扩散 等过程进行迁移，结果是在 介质 里出现光感生 电场。 光感生电场再通过介质的 电光效应 产生折射率变化。 但折射率变化不是即时发生，而需要一定的建立时间；即使是弱光，只要 照射时间 足够长也可产生明显的光折变效应；只有在介质里 空间 …
Photorefraction estimates of refractive power varies with the …
2015年1月23日 · The technique of photorefraction involves projecting light into the eye from an array of IR LED's positioned eccentrically from the camera aperture and calibrating the slope of...
The simultaneous enhancement of photorefraction and ... - Nature
2016年2月3日 · For a long time that optical damage was renamed as photorefraction, here we find that the optical damage resistance and photorefraction can be simultaneously enhanced in MgO and Bi2O3 co-doped...
11 - Photorefractive effect and materials - Cambridge University …
The electro-optic effect translates the internal electric fields induced by the inhomogeneous space-charges into a modulation of the material refractive index. This is the main mechanism for photorefraction in inorganic and organic crystals [1].
Photorefraction of the Eye | The Physics Teacher - AIP Publishing
2015年2月1日 · Photorefraction is a method to easily estimate the refractive state of the eye. The principle of photorefraction involves projecting light into the eye during flash photography and then examining the paths of light that emerge from the pupil after scattering on the back portion of the interior of the eyeball (fundus).
Basic Concepts of Nonlinear and Photorefractive Optics
An excellent, complete introduction to all important properties of photorefraction and phase conjugation — well-written and easy to understand. Google Scholar. B.Y. Zel’dovic, N.F. Pilipisky, V.V. Shkunov, Principles of Phase Conjugation, Springer series in optical sciences (1988) .
Photorefractive Effect: Principles, Materials, and Near‐Infrared ...
2016年8月15日 · The article consists of two main parts: the first one contains a short summary of the photorefractive effect, discussing the phenomena and the main aspects related to practical applications, followed by a synopsis of the recent progress of photorefractive materials.
The photorefractive effect. WHEN two light beams intersect to create an interference pattern in a photo refractive material, mobile charges are produced at the intensity peaks by optic al...
Photorefractive Effect - Crystal Optics - Wiley Online Library
2019年5月17日 · The photorefractive effect is a nonlinear optical effect seen in certain crystals and other materials that respond to light by altering their refractive index. This effect can be used to store temporary, erasable holograms and is useful for holographic data storage.