By Gerald F. Marshall, Glenn E. Stutz
From its preliminary e-book titled Laser Beam Scanning in 1985 to Handbook of Optical and Laser Scanning, now in its moment version, this reference has saved execs and scholars on the vanguard of optical scanning know-how. rigorously and meticulously up-to-date in every one new release, the publication remains to be the main complete scanning source out there. It examines the breadth and intensity of subtopics within the box from numerous perspectives.
The moment version covers:
- Technologies reminiscent of piezoelectric devices
- Applications of laser scanning reminiscent of Ladar (laser radar)
- Underwater scanning and laser scanning in CTP
As laser bills come down, and tool and availability bring up, the capability functions for laser scanning proceed to extend. Bringing jointly the data and adventure of 26 authors from England, Japan and the us, the booklet offers a very good source for knowing the foundations of laser scanning. It illustrates the importance of scanning in society this day and may aid the consumer start in constructing method recommendations utilizing scanning. it may be used as an advent to the sector and as a reference for folks interested in any element of optical and laser beam scanning.
Read or Download Handbook of Optical and Laser Scanning, Second Edition (Optical Science and Engineering) PDF
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From its preliminary book titled Laser Beam Scanning in 1985 to instruction manual of Optical and Laser Scanning, now in its moment variation, this reference has saved pros and scholars on the vanguard of optical scanning know-how. conscientiously and meticulously up to date in every one new release, the ebook remains to be the main finished scanning source out there.
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Additional info for Handbook of Optical and Laser Scanning, Second Edition (Optical Science and Engineering)
The methods based on a pinhole scan (Dpin, D4s , and CCD cameras) suffer from low light levels in this regard. On the other hand, a laser beam is generated in a resonator subject to microphonic perturbations, making the beam jitter in position and the profile distort typically by about 1% of the beam diameter, so that a greater instrument measurement accuracy is usually not significant. 4. Is the convolution error associated with the method significant? The convolution error is the contribution to the measured diameter due to the finite dimensions of the scan aperture, either the diameter H of a pinhole or width S of a slit.
The camera, of course, has its own advantages of giving a two-dimensional map of the laser spot’s irradiance peaks and is able to measure beams from pulsed lasers. 3 Comparing the Five Common Methods for Defining and Measuring Beam Diameters The discussion below and Table 1 summarize the properties of the five diameter definitions. 1 Dpin, Separation of 1/e 2-Clip-Points of a Pinhole Profile The pinhole scan reveals the structure of the irradiance variations across the beam spot with the greatest accuracy and detail, but does so working with a low light signal level and it is subject to convolution error with focused spots.
The last is the second-moment diameter, defined as four times the standard deviation of the radial irradiance distribution recorded by a pinhole scan, and designated by the symbol D4s . For the ratio of donut mode to Copyright © 2004 by Marcel Dekker, Inc. 41, respectively, also different from the three other values above. After discussion of some common considerations (Sec. 2), these five diameter definitions are evaluated below (Sec. 3), leading to the summary given in Table 1. 2 General Considerations in Obtaining Useable Beam Profiles Five questions are important in evaluating what beam diameter method is best for a given application.