Objective: To assess the efficacy and safety of IPL in patients with inflammatory Acne Vulgaris.
 Study Design: Quasi-experimental study.
 Place Duration Study: Department Dermatology, Pakistan Air Force Hospital, Fazaia Medical College, Islamabad Pakistan, from Aug 2019 to Jan 2020.
 Methodology: Ninety facial acne were enrolled received four Intense Pulsed Light (IPL) sessions ...

Light-light switching typically requires strong nonlinearity where intense laser fields route and direct data flows of weak power, leading to a high power consumption that limits its practical use. Here we report an experimental demonstration of a metawaveguide that operates exactly in the opposite way in a linear regime, where an intense laser field is interferometrically manipulated on demand...

A high-energy C 0 2 laser is channeled in a capillary discharge. Occurrence of guiding conditions at a relatively low plasma density ( ~ 1 0 ' ~ ~ m ~ ) is confirmed by MHD simulations. Divergence of relativistic electron beam changes depending on the plasma density. Counter-propagation of the electron and laser beams inside the plasma channel results in intense x-ray generation.

'What is the most intense stimulus I should use when studying an impaired region of the visual field?' This is a question which frequently faces the clinical investigator who is studying the function of a severely impaired region of the visual field, but it is a question to which answers cannot be found in the literature. The question arises because there are two distinct ways in which an inten...