Scientific Applications of Frequency-stabilized Laser Technology in Space PDF Download
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Author: Bonny L. Schumaker
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 276
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Book Description
This report is a synoptic investigation of the uses of frequency-stabilized lasers for scientific applications in space. It begins by summarizing properties of lasers, characterizing their frequency stability, and describing limitations and techniques to achieve certain levels of frequency stability. Limits to precision set by laser frequency stability for various kinds of measurements are investigated and compared with other sources of error. These other sources include photon-counting statistics, scattered laser light , fluctuations in laser power and intesity distribution across the beam, propagation effects, mechanical and thermal noise, and radiation pressure. -- From abstract.
Author: Bonny L. Schumaker
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 276
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Book Description
This report is a synoptic investigation of the uses of frequency-stabilized lasers for scientific applications in space. It begins by summarizing properties of lasers, characterizing their frequency stability, and describing limitations and techniques to achieve certain levels of frequency stability. Limits to precision set by laser frequency stability for various kinds of measurements are investigated and compared with other sources of error. These other sources include photon-counting statistics, scattered laser light , fluctuations in laser power and intesity distribution across the beam, propagation effects, mechanical and thermal noise, and radiation pressure. -- From abstract.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 692
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722644635
Category :
Languages : en
Pages : 28
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Book Description
This is a summary of a research project that has come to be known as SUNLITE, initially standing for Stanford University - NASA laser in space technology experiment. It involves scientists from the NASA Langley Research Center (LaRC), Stanford University, the National Institute of Standards and Technology (NIST), and the Joint Institute for Laboratory Astrophysics (JILA), and a growing number of other institutions. The long range objective of the SUNLITE effort is to examine the fundamental linewidth and frequency stability limits of an actively stabilized laser oscillator in the microgravity and vibration-free environment of space. The ground-based SUNLITE activities supporting that objective will develop a space-qualified, self-contained and completely automated terahertz oscillator stabilized to a linewidth of less than 3 Hz, along with a measurement system capable of determining laser linewidth to one part in 10(exp 16). The purpose of this paper is to discuss the critical technologies needed to place stabilized lasers in space and to describe the progress made by the SUNLITE project to develop these technologies. Buoncristiani, A. M. and Sandford, S. P. and Amundsen, R. M. Langley Research Center ...
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722409272
Category :
Languages : en
Pages : 92
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Book Description
The goal of the NASA Sunlite program is to fly two diode-laser-pumped solid-state lasers on the space shuttle and while doing so to perform a measurement of their frequency stability and temporal coherence. These measurements will be made by combining the outputs of the two lasers on an optical radiation detector and spectrally analyzing the beat note. Diode-laser-pumped solid-state lasers have several characteristics that will make them useful in space borne experiments. First, this laser has high electrical efficiency. Second, it is of a technology that enables scaling to higher powers in the future. Third, the laser can be made extremely reliable, which is crucial for many space based applications. Fourth, they are frequency and amplitude stable and have high temporal coherence. Diode-laser-pumped solid-state lasers are inherently efficient. Recent results have shown 59 percent slope efficiency for a diode-laser-pumped solid-state laser. As for reliability, the laser proposed should be capable of continuous operation. This is possible because the diode lasers can be remote from the solid state gain medium by coupling through optical fibers. Diode lasers are constructed with optical detectors for monitoring their output power built into their mounting case. A computer can actively monitor the output of each diode laser. If it sees any variation in the output power that might indicate a problem, the computer can turn off that diode laser and turn on a backup diode laser. As for stability requirements, it is now generally believed that any laser can be stabilized if the laser has a frequency actuator capable of tuning the laser frequency as far as it is likely to drift in a measurement time. Byer, Robert L. Unspecified Center...
Author: John L. Hall
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 296
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Author: Lan Xinju
Publisher: CRC Press
ISBN: 1420091719
Category : Science
Languages : en
Pages : 428
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Book Description
As different laser technologies continue to make it possible to change laser parameters and improve beam quality and performance, a multidisciplinary theoretical knowledge and grasp of cutting-edge technological developments also become increasingly important. The revised and updated Laser Technology, Second Edition reviews the principles and basic
Author: Horst Montag
Publisher: Springer Science & Business Media
ISBN: 3642781497
Category : Science
Languages : en
Pages : 482
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Book Description
The investigation of the kinematics and dynamics of the Earth has achieved remarkable progresses in the last decades in understanding and explaining a large variety of geo- dynamical, geophysical and geological phenomena. The impact of increasingly precise geodetic space-time measurements and analyses have much contributed to these results. Papers presented atthe 7th International Symposium on Geodesy and Physics of the Earth focus onfour topics: - Present Day Tectonic Motions - Gravity Field and its Variation - Earth Rotation Characteristics - International Programs for Geodesy and Geodynamics Researchers and advanced students may use this volume as a comprehensive reference of concepts, techniques and results.
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1228
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Author: G. Beutler
Publisher: Springer Science & Business Media
ISBN: 9401713332
Category : Science
Languages : en
Pages : 446
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Book Description
Volume resulting from an ISSI Workshop, 11-15 March 2002, Bern, Switzerland
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 628
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