The knife-edge method is a commonly used technique to characterize the optical profiles of
laser beams or focused spots. In this paper, we present a micro knife-edge scanner …

In this paper, a simple and accurate method based on Z-scan and parallel moiré
deflectometry for measuring the focal length of microlenses is reported. A laser beam is …

A holographic polymer-dispersed liquid crystal (HPDLC) thin film is composed of
multifunctional acrylate monomer blended with the nematic liquid crystal mixture, and then …

An approach to the measurement of mechanical displacements in the picometer range is
proposed. The basic idea is to intercept a focused laser beam with a blade whose …

We report on an efficient and fast hybrid photorefractive polymer sensitized with CdSe
quantum dots. The surface of the quantum dots was treated with 4-methylbenzenethiol. This …

Light is commonly used in photonic applications such as laser beams with a complex
distribution of the intensity as a function of wavelength, space, time and polarization. In …

隨著光儲存等應用系統的迅速發展, 微光點的量測變得越來越迫切和重要, 利用傳統的遠場光學
方法並不能直接量測聚焦光點, 且解析度受限於光感測器的像素大小(約5 μm). 然而 …