Abstract: Interactions between optical beams incident upon and generated within a photorefractive material are investigated by numerically solving a set of nonlinear coupled differential equations.

Abstract: This paper reviews our past and current work on microwave photonic photorefractive smart filters (MWP-PSFs). These devices rely on the generation of dynamic Bragg gratings inside InP:Fe 1.55 ...

BACKGROUND Following excimer laser photorefractive keratectomy (PRK), an increase in glare sensitivity and a reduction in contrast sensitivity can occur owing to changes in the cornea (structure and ...

Medically reviewed by Andrew Greenberg, MD Astigmatism is a common eye condition where the cornea (outermost eye layer) is ...

Abstract: In stimulated Mandel' shtam-Brillouin scattering (SMBS) the back-scattered light propagates usually in the same solid angle as the exciting radiation [1]. It has never been ascertained ...

Instead of LASIK, those with thin corneas might do better with photorefractive keratectomy (PRK). In this procedure, the epithelium, the top surface of the eye, is removed rather than forming a flap, ...

For the right eye, photorefractive keratectomy, a type of laser eye surgery to correct vision, was performed, he added. Those surgeries, fully covered by the hospital, significantly improved Hsiao’s ...