Fiber Output Beam Shape Study Using Imaging Technique

Output Overlapped Beam Shape Study of a Fiber Bundle System for Optical Power Delivery Applications

In this article a typical near field output power distribution of an optical fiber is obtained with conventional cross sectional imaging of the fiber output beam and is used to predict the overlapped output beam of a fiber bundle. The proposed fiber bundle is a design system for power delivery of a light source to the target, specifically for medical applications. A Gaussian surface is generate...

Self-imaging technique for beam collimation.

A simple collimation technique based on measuring the period of one self-image produced by a diffraction grating is proposed. Transversal displacement of the grating is not required, and then automatic single-frame processing can be performed. The self-image is acquired with a CMOS camera, and the period is computed using the variogram function. Analytical and experimental results are obtained,...

Pretreatment quality control of single isocenter half- beam treatment planning technique using an amorphous silicon electronic portal-imaging device (EPID)

Introduction: Electronic portal imaging devices (EPIDs) are fundamentally used for instantaneous verification of the patient set‐up, block shape, and leaf positions during radiation therapy. In radiotherapy, situations arise in which an inclined PTV must be treated mutually with adjacent nodal regions. This methodology is most widely used for matching tangential/lateral breas...

Coherent polarization beam combining of eight fiber lasers using single-frequency dithering technique

Shape Control And Optimization Using Cantilever Beam

In this study, Analytical work is carried out for static shape control of cantilever beam structure with a use of laminated piezoelectric actuator (LPA). The mathematical modeling of beam element covered with LPA based on Timoshenko beam element theory and linear theory of piezoelectricity has been used. This work shows how number of actuators, actuator size, actuator location on beam and contr...