PPT-LASER BEAM MACHINING CONTENTS

Introduction Laser action and Population inversion Methods to achieve Population inversion Types of Laser Process and Beam Parameters Process Capabilities Application Advantages Disadvantages . In early 1990, Rache Corporation began developing laser technology to accurately cut thin metal shapes. A presentation by . Emeritus Professor David Allen BSc, PhD, DSc. on behalf of the . Photo Chemical Machining Institute (PCMI) – an international, not-for-profit, organisation for the promotion of photochemical machining technology.. (LBM). By:. Dhiman. Johns. M.E.(PIE), . . Thapar. University, Patiala. Laser Beam Machining – An Introduction . LASER stands for Light Amplification by Stimulated Emission of Radiation. . The underline working principle of laser was first put forward by Albert Einstein in 1917 though the first industrial laser for experimentation was developed around 1960s. . BY. S.PREMKUMAR. Process. Capability. Laser beam machining process. Laser beam machining process uses highly coherent light source.. This beam can be focused by means of a lens on a very small spot in the work piece.. Laser Beam Containment. Lasers can produce intense, directed radiation that does not decrease with distance. . Lasers are classified by intensity and wavelength.. Effects from beam exposure. Ultraviolet – burns on cornea and lens. Advanced Manufacturing Technology. Group Seminar. L. B. L. B. A. A. S. S. E. E. R. R. E. E. A. A. M. M. M. A. C. H. I. I. N. N. G. A. C. H. I. N. I. N. M. G. . Process. Capability. Laser beam machining process. Zone plate. Laser-beam . diffraction. A lens transforms a Fresnel . diffraction problem to a . . Fraunhofer. diffraction problem.. The lens as a Fourier transformer. Diffraction gratings & spectrometers. of 3D . structures on the micrometer . scale. Most methods use silicon as . substrate material. Some of process involved in this are photolithography, etching, bulk machining, laser machining etc.. Unit metal removal rate and equipment precision are key factors to micro machining.. Mission Hospital. LASER. . L. ight . A. mplification . by the . . S. timulated . E. mission of . . R. adiation. Characteristics of Laser Light. Collimated- tightly beamed. Svetlana Avramov-Zamurovic Olga . Korotkova. Reza . Malek-Madani. 11/1/2011. 1. ONR meeting. Investigation Method. Laser Beam Propagation in Maritime Environment. 11/1/2011. 2. ONR meeting. Field experiments . sPHENIX. TPC. B.Azmoun. , BNL. Laser beams as a Calibration tool. Objective: Use 266nm laser (4.66eV) to liberate charge along beam trajectory to simulate controlled particle tracks in TPC (long history for using laser beams in gaseous detectors). elding. Submitted to: . Mr. : . Qamar. . Tanveer. Submitted by:. Saurabh. Gupta. Introduction. LASER stands for “Light Amplification by Stimulated . Emission Of Radiation”. Lasers are devices that produce intense beams of light which. Liverpool. University. Contents. Basics. Health & Safety Legislation. Laser Classification. Laser safety Labelling. Laser Safety Procedures . at Liverpool. Practical Laser Safety. Hazard Evaluation & Risk Assessment. Main parts of a laser. Different types of a laser. Applications of laser. INTRODUCTION. The . word laser is actually an acronym for “. L. ight . A. mplification . by . S. timulated . E. mission of .