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Author: Ulrich Schreiber
Publisher: Cambridge University Press
Published: 2023-01-31
Total Pages: 335
ISBN-13: 1108422551
DOWNLOAD EBOOKAn overview of ring lasers for high-resolution inertial rotation sensing of the Earth and applications in geophysics and geodesy.
Author: Ulrich Schreiber
Publisher: Cambridge University Press
Published: 2023-01-31
Total Pages: 335
ISBN-13: 1108529836
DOWNLOAD EBOOKRing lasers are commonly used as gyroscopes for aircraft navigation and attitude control. The largest ring lasers are sensitive enough that they can be used for high resolution inertial rotation sensing of the Earth in order to detect tiny perturbations to the Earth's rotation caused by earthquakes or global mass transport. This book describes the latest advances in the development of large ring lasers for applications in geodesy and geophysics using the most sensitive and stable devices available. Chapters cover our current knowledge of the physics of the laser gyroscope, how to acquire and analyse data from ring lasers, and what the potential applications are in the geosciences. It is a valuable reference for those working with ring lasers or using the data for applications in geodesy and geophysics; as well as researchers in laser physics, photonics and navigation.
Author: Kamal Nain Chopra
Publisher: Springer Nature
Published: 2020-09-19
Total Pages: 151
ISBN-13: 9811583803
DOWNLOAD EBOOKThe book presents the detailed study of optoelectronic gyroscopes, especially Ring Laser Gyroscopes (RLGs) and Fiber Optic Gyroscopes (FOGs). It discusses their design in detail to optimize their performance, besides explaining the related concepts and the new developments. Other topics covered in this book are double ion beam sputtering for fabricating RLG mirrors on the high quality optical substrates, optical testing, and thin films characterization techniques. The book will be useful for the researchers, professionals, and engineers working in the areas of optical gyroscopes and the related technologies.
Author: D. A. Guidice
Publisher:
Published: 1963
Total Pages: 46
ISBN-13:
DOWNLOAD EBOOKThe concept of using a ''ring'' laser to measure angular rotation is presented. The optical frequencies of the clockwise and the counterclockwise beams traveling around the perimeter of the square ''ring'' depend on their respective optical path lengths which are equal in the absence of rotation. However, angular rotation alters the path lengths, resulting in different frequencies for the two traveling waves. The two waves are optically heterodyned in a photodetector and the resultant beat frequency is directly proportional to the rotation rate of the ''ring.'' An experiment verifying the existence of this phenomenon using a gas laser in the square ''ring'' configuration is described. The physics of mode pulling and various ways to minimize or bypass this problem are discussed in detail. Techniques for artificially separating the frequencies of the two waves by introduction of nonreciprocal elements into the optical path are described. Accuracy limitations caused by mechanical instabilities, excitation variations and inherent stimulated emission line width are examined.
Author: V. Dehant
Publisher: Cambridge University Press
Published: 2015-04-16
Total Pages: 553
ISBN-13: 110709254X
DOWNLOAD EBOOKThis book describes how changes in the Earth's orientation are observed and computed in terms of tidal forcing and models of the Earth's interior.
Author: Craig Hoffman
Publisher: CRC Press
Published: 2015-09-22
Total Pages: 3726
ISBN-13: 1351247174
DOWNLOAD EBOOKThe first edition of the Encyclopedia of Optical and Photonic Engineering provided a valuable reference concerning devices or systems that generate, transmit, measure, or detect light, and to a lesser degree, the basic interaction of light and matter. This Second Edition not only reflects the changes in optical and photonic engineering that have occurred since the first edition was published, but also: Boasts a wealth of new material, expanding the encyclopedia’s length by 25 percent Contains extensive updates, with significant revisions made throughout the text Features contributions from engineers and scientists leading the fields of optics and photonics today With the addition of a second editor, the Encyclopedia of Optical and Photonic Engineering, Second Edition offers a balanced and up-to-date look at the fundamentals of a diverse portfolio of technologies and discoveries in areas ranging from x-ray optics to photon entanglement and beyond. This edition’s release corresponds nicely with the United Nations General Assembly’s declaration of 2015 as the International Year of Light, working in tandem to raise awareness about light’s important role in the modern world. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]
Author: Herve C. Lefevre
Publisher: Artech House
Published: 2014-10-01
Total Pages: 413
ISBN-13: 1608076962
DOWNLOAD EBOOKWritten by one of the field’s leading experts, this landmark reference presents a thorough system analysis of the fiber-optic gyroscope (FOG), describing the concepts that have emerged as the preferred solutions for obtaining a practical device. This book’s first edition was published in the early 1990’s. If the basic design rules of the FOG have remained unchanged, the technology has certainly matured, and the expectations presented in the first edition have been largely exceeded. This second edition is updated throughout, featuring new content on Allan variance; testing with optical coherence domain polarimetry; the Shupe effect; and rare-Earth doped fiber ASE sources. In addition, brand new comprehensive appendixes cover the optics, single-mode fiber optics, and integrated optics necessary to understand the fiber gyro and provide an appropriate vocabulary for communicating with electronic component designers.
Author:
Publisher: North Atlantic Treaty Organization Resear Rganization
Published: 1999
Total Pages: 344
ISBN-13:
DOWNLOAD EBOOKAuthor: Roman Teisseyre
Publisher: Springer Science & Business Media
Published: 2006-07-01
Total Pages: 582
ISBN-13: 3540313370
DOWNLOAD EBOOKThis breakthrough book is the first to examine the rotational effects in earthquakes, a revolutionary concept in seismology. Existing models do no yet explain the significant rotational and twisting motions that occur during an earthquake and cause the failure of structures. The rotation and twist effects are investigated and described, and their consequences for designing tall buildings and other important structures are presented. This book will change the way the world views earthquakes.
Author: P. Hariharan
Publisher: Academic Press
Published: 2003-09-22
Total Pages: 369
ISBN-13: 0123116309
DOWNLOAD EBOOKNanotechnology, sensor and measurement industries depend on these advances in optical interferometry for accuracy and profitability.
