Measurement of Pulsed-Laser Power (Classic Reprint)

Download or read book Measurement of Pulsed-Laser Power (Classic Reprint) written by M. Young and published by Forgotten Books. This book was released on 2018-01-08 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Measurement of Pulsed-Laser Power We describe calibrating several Optical-pulse power meters to an accuracy of about 82 or better. The meters are designed for Q-switched neodymium lasers with peak powers in excess of a few megawatts and pulses longer than five or ten nanoseconds. Combined with a fast oscilloscope or a transient digitizer, the meters display the time-domain waveform of the laser emission and thereby allow determination of Parameters such as transition duration (risetime, falltime), duration and peak power. We discuss calibrating the meters by both pulsed and cw methods, and show why each method is useful as a check on the other. We treat in some detail the effect of speckle on the use of diffusers as attenuators in power-meters such as ours. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.