Last edited by Negor
Monday, February 17, 2020 | History

5 edition of Laser-Induced Damage in Optical Materials found in the catalog.

Laser-Induced Damage in Optical Materials

30th Annual Boulder Damage Symposium, 28 September 1 October 1998, Boulder , Colorado (Proceedings of SPIE)

by

  • 380 Want to read
  • 7 Currently reading

Published by Society of Photo Optical .
Written in English

    Subjects:
  • Applied optics,
  • Lasers,
  • Technology,
  • Science/Mathematics

  • Edition Notes

    ContributionsGregory J. Exarhos (Editor), Arthur H. Guenther (Editor), Mark R. Kozlowski (Editor), Keith L. Lewis (Editor), M. J. Soileau (Editor)
    The Physical Object
    FormatPaperback
    Number of Pages852
    ID Numbers
    Open LibraryOL11393108M
    ISBN 100819430455
    ISBN 109780819430458

    Widmayer; T. Carr ; J-M. Bulk or Surface Damage Often, it is important to know whether some damage threshold applies to the bulk material or to the surface. Some optical components are embedded into mounts consisting of materials which should never be hit by laser beams.

    This means that even for constant optical power, the actual peak intensity can fluctuate, and is then obviously difficult to determine. This presentation will provide a survey of results in theory and experimental study of mechanisms of laser induced damage. Davis; Nick Schenkel; Matthew J. Miller; Laura M. At least, however, one should clearly specify the pulse duration used in the damage measurement.

    Grua ; V. Bailey; Craig T. This observation illustrates the important role of the polymer matrix in facilitating recovery of the dye molecules. This covers both thermal damage and dielectric breakdown as a function of absorption and laser pulse length and spot size. Consoles Show Abstract Non-diffracting surface relief grating structures combined with high refractive index films were designed as high efficiency, narrow-band, polarization selective high reflectors for the near infrared wavelength region. Samples with arrays of indents were tested in the in the Optical Science Laser OSLa master oscillator power amplifier system, with a front-end pulse shaping capability able to deliver relevant fluences with a large area beam.


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Laser-Induced Damage in Optical Materials Download PDF Ebook

With this tight focus, the laser power at the breakdown threshold of BK7 glass is below the SBS threshold, and the effect of self focusing is small.

Three NSP designs based on gratings in fused silica combined with tantala and magnesium fluoride films, were prototyped and characterized for efficiency, surface absorption and pulsed laser damage resistance at a wavelength of nm.

The self-organized nanogratings are mainly produced due to the interaction of the high-intensity incident laser beam and the laser induced plasma waves.

Scientific publications usually specify the intensity or fluence values where the damage actually sets in. The following chapters are devoted to surfaces and sub-surface damage, coatings, measurement techniques, and special topics such as scaling and the importance of using the correct measurement unit systems.

DTIC ADA068924: Laser Induced Damage In Optical Materials: 1978,

Normally, doubling the laser beam area should allow one to apply two times more power until damage occurs. A simplified one-dimensional thermal conduction and radiation model replicated the remotely-sensed temperature as a function of time in tests with constant absorptance and no material breakdown.

Finally cleaning method and layer count have had a less obvious correlation with laser resistance over the history of this thin film damage competition.

Laser damage testing was performed at a single testing facility using the raster scan method with a 3-ns pulse length laser system operating at 5 Hz in a multi-longitudinal mode. Additionally, by improving the purification process and growth process, we succeeded to reduce 75 percent of the amount of color center induced by irradiation of ArF laser.

Optical microscopy was used for coating investigation after the conducted experiments.

Applied Optics

Author s : Christopher J. Carr Show Abstract. This contribution is intended to offer a brief review on the present status of optics characterization and the related standards often applied in the production of laser components. Leinhos ; J. Cumulative Effects Cumulative effects see above should also be taken into account.

Comprehensive durability evaluation becomes more efficient by creating accelerated element tests short term. Reach for higher energies brings more stress into crystals thin film coatings field, where methods used in the past are not sufficient anymore.

Surface absorption measurements showed the expected low absorption in the 4 ppm range for film layers deposited on non-structured control substrates, but voids and growth defects revealed Laser-Induced Damage in Optical Materials book scanning electron microscopy in the same films deposited over gratings, likely caused an observed 5 Laser-Induced Damage in Optical Materials book increase in NSP prototype surface absorption.

Damage thresholds of materials or components can essentially be measured by evaluating the damage caused by laser light at different intensity or fluence levels. We also compare damage morphologies of BK7 glass with those of fused silica. A slight antireflective effect was consistently observed at the onset of the deposition process in our experimental conditions.

First, non-absorbing monodisperse SiO2 microspheres with five different sizes were used to create engineered nodules in 1. Author s : Jonathan W. Jensen ; X. The damage mechanism can be estimated from these results. Such nanostructure polarizers NSP have the potential for increased laser damage resistance due to reduced absorption and the ability to create arbitrary refractive index layers with fewer defects and reduced electric field enhancement.

Miller; Laura M. Author s : Robert D. Author s : Mark Kimmel ; Binh T. To make things worse, the used definition is often not specified. The single-site thresholds at the diffusion-bonded boundary were close to that of single-crystal YAG.

Motokoshi ; M. As large amounts of heat need to be dissipated during laser operation, cryogenic cooling is [email protected]{osti_, title = {Laser induced damage in optical materials. }, author = {Bennett, H.E. and Guenther, A.H. and Milam, D. and Newnam, B.E.}, abstractNote = {The symposium presented in this book focused on materials and measurements, mirrors and surfaces, thin films, and fundamental mechanisms.

The emphasis of the papers presented at the symposium was directed toward new. The increase of power of those facilities is limited by the resistance to laser-induced damage of the optical components placed after the compression magicechomusic.com: Semyon Papernov.

Laser-induced damage may occur at the faces of the optical component, at interfaces between components or in the bulk of the component. The spatial distribution may vary from a perfect Gaussian or a semi- Gaussian through some complicated mode structure to a random intensity profile.The eleventh Symposium on Pdf Materials for Pdf Lasers (Boulder Damage Symposium) was held at the National Bureau of Standards in Boulder, Colorado, 30–31 October The symposium was held under the auspices of ASTM Committee F-1, Subcommittee on Laser Standards, with the joint sponsorship of NBS, the Defense Advanced Research Projects Agency, the Department .Laser Induced Damage of Optical Materials is an invaluable resource to those working with optical systems where high laser intensity is a factor.

Reviews "The study of LIDT theory, mechanisms, measurement, and amelioration has become a major research topic in the laser community.The ebook Symposium on Optical Materials for High-Power Ebook (Boulder Damage Symposium) was held at the National Bureau of Standards in Boulder, Colorado, 30–31 October The symposium was held under the auspices of ASTM Committee F-1, Subcommittee on Laser Standards, with the joint sponsorship of NBS, the Defense Advanced Research Projects Agency, the Department .