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Author: Matt Young
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 44
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Book Description
Author: Matt Young
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 44
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Book Description
Author: M. Young
Publisher: Forgotten Books
ISBN: 9780428598433
Category :
Languages : en
Pages : 44
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Book Description
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.
Author: M. Young
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 35
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Book Description
Author: D. A. Jennings
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 16
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Book Description
Author: D. A. Jennings
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 16
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Book Description
Author: C. B. Wheeler
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Book Description
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Calorimetry
Languages : en
Pages : 76
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Book Description
Calorimeters for measuring the output energy of pulsed ruby and neodymium glass lasers have been built and calibrated.The absorbing medium is an aqueous solution of CuSO4. Calibration of *laser energy detectors has an estimated uncertainty of plus or minus 2% for input energies of 0.1J to 100J.Instrumentation is described that is used for the calibration of cw laser power meters.The calibration unit employs an absorption cell calorimeter to calibrate the output of a photovoltaic cell transfer detector.The calibrations are within an accuracy of 4%.A discussion and description is also given of several types of calorimeters that have been used to measure the output of a 100 watt CO2 laser.The most recent design provides for measurement from 1 watt to 5 kilowatts with a measured accuracy of better than 3%.(Author).
Author:
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages :
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Book Description
Author: Frank B. A. Früngel
Publisher: Academic Press
ISBN: 1483274314
Category : Technology & Engineering
Languages : en
Pages : 494
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Book Description
High Speed Pulse Technology: Volume II: Optical Pulses - Lasers - Measuring Techniques focuses on the theoretical and engineering problems that result from the capacitor discharge technique. This book is organized into three main topics: light flash production from a capacitive energy storage; signal transmission and ranging systems by capacitor discharges and lasers; and impulse measuring technique. This text specifically discusses the air spark under atmospheric conditions, industrial equipment for laser flashing, and claims for light transmitting system. The application of light impulse signal transmission, impulse measurements by means of spark gaps, and conversion factors of various energy units are also described. This publication is recommended for eager electrical engineering and physics students interested in optical pulses, lasers, and measuring techniques.
Author: James Baldwin Salisbury
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Book Description
