Laser Induced Damage in Optical Materials 4Th Kstm Symposium June 14-15, 1912
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175167-^4 OCT 1 7 1975 NATL INST. OF STAND & TECH A UNITED STATI qt\oo DEPARTMENT ( COMMERC ,U57 PUBUCATIOI AlllOb 0 M 00 M 0 NBS SPECIAL PUBLICATION 372 Laser Induced Damage In Optical Materials: 197 U.S. •PARTMENT OF COMMERCE National Bureau irds 00 )S1 •374 NATIONAL BUREAU OF STANDARDS The National 1 Bureau of Standards was established by an act of Congress March 3, 1 901 The Bureau's overall is . goal to strengthen and advance the Nation's science and technology and facilitate their effective application for public benefit. To this end, the Bureau conducts research and provides: (1) a basis for the Nation's physical measure- ment system, (2) scientific and technological services for industry and government, (3) a technical basis for equity in trade, and (4) technical services to promote public safety. The Bureau consists of the Institute for Basic Standards, the Institute for Materials Research, the Institute for Applied Technology, the Center for Computer Sciences and Technology, and the Office for Information Programs. THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scien- tific community, industry, and commerce. The Institute consists of a Center for Radia- tion Research, an Office of Measurement Services and the following divisions: Applied Mathematics—Electricity—Heat—Mechanics—Optical Physics—Linac Radiation 2—Nuclear Radiation 2—Applied Radiation 2—Quantum Electronics 3— Electromagnetics 3—Time and Frequency 3 —Laboratory Astrophysics 3—Cryo- 3 genics . THE INSTITUTE FOR MATERIALS RESEARCH conducts materials research lead- ing to improved methods of measurement, standards, and data on the properties of well-characterized materials needed by industry, commerce, educational institutions, and Government; provides advisory and research services to other Government agencies; and develops, produces, and distributes standard reference materials. The Institute con- sists of the Office of Standard Reference Materials and the following divisions: Analytical Chemistry—Polymers—Metallurgy—Inorganic Materials—Reactor Radiation—Physical Chemistry. THE INSTITUTE FOR APPLIED TECHNOLOGY provides technical services to pro- mote the use of available technology and to facilitate technological innovation in indus- try and Government; cooperates with public and private organizations leading to the development of technological standards (including mandatory safety standards), codes and methods of test; and provides technical advice and services to Government agencies upon request. The Institute also monitors NBS engineering standards activities and provides liaison between NBS and national and international engineering standards bodies. The Institute consists of a Center for Building Technology and the following divisions and offices: Engineering Standards Services—Weights and Measures—Invention and Inno- vation—Product Evaluation Technology—Electronic Technology—Technical Analysis—Measurement Engineering—Fire Technology—Housing Technology 4 —Federal Building Technology 4—Building Standards and Codes Services 4— Building Environment 4—Structures, Materials and Life Safety 4—Technical 4 Evaluation and Application . THE CENTER FOR COMPUTER SCIENCES AND TECHNOLOGY conducts re- search and provides technical services designed to aid Government agencies in improv- ing cost effectiveness in the conduct of their programs through the selection, acquisition, and effective utilization of automatic data processing equipment; and serves as the prin- cipal focus within the executive branch for the development of Federal standards for automatic data processing equipment, techniques, and computer languages. The Center consists of the following offices and divisions: Information Processing Standards—Computer Information—Computer Services —Systems Development—Information Processing Technology. THE OFFICE FOR INFORMATION PROGRAMS promotes optimum dissemination and accessibility of scientific information generated within NBS and other agencies of the Federal Government; promotes the development of the National Standard Reference Data System and a system of information analysis centers dealing with the broader aspects of the National Measurement System; provides appropriate services to ensure that the NBS staff has optimum accessibility to the scientific information of the world, and directs the public information activities of the Bureau. The Office consists of the following organizational units: Office of Standard Reference Data—Office of Technical Information and Publications—Library—Office of International Relations. 1 mailing Headquarters and Laboratories at Gaithersburg, Maryland, unless otherwise noted ; address Washington, D.C. 20234. 2 Part of the Center for Radiation Research. 3 Located at Boulder, Colorado 80302. i mm ur tiimimm Laser Induced Damage h1 In Optical Materials: 1972 Proceedings of a Symposium Sponsored by The American Society for Testing and Materials And by the National Bureau of Standards June 14-15, 1972 NBS, Boulder, Colorado 80302 Edited by Alexander J. Class Wayne State University Detroit, Michigan 48202 and Arthur H. Guenther Air Force Weapons Laboratory Kirkland AFB, New Mexico 87117 U.S. DEPARTMENT OF COMMERCE, Peter G. Peterson, Secretary { NATIONAL BUREAU OF STANDARDS, Lawrence M. Kushner, Acting Director Issued October 1972 Library of Congress Catalog Card Number: 72-600276 National Bureau of Standards Special Publication 372 Nat. Bur. Stand. (U.S.), Spec. Publ. 372, 215 pages (Oct. 1972) CODEN: XNBSAV For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 (Order by SD Catalog No. 03.10:372). Price $1.75 . TonwonA. These ptoceedingi tepott in detail the fonmal papens ptesented at the 4th Annual Symposium on Laszt Damage, in Optical Materials held at the National Bateau of Standards, Boulder, Colorado on Jane 14 and 15, 7 972. This meeting was jointly i>ponsoted by the National Bateau of Standard* and the American Society of Testing and Materials. The major topics coveted were bulk damage in transparent dielectrics , damage at dielectric surfaces, damage due to t, elf- focusing, damage to dielectric coating*, as well as damage to mitrons and window* in the infrared. The co-chairmen, Vt. Alexander J. Glast, of Wayne State University, Vetnoit, Michigan, and Vr. A. H. Guenther of the Ait T-on.ce Weapon* Laboratory, Kirtland ARB, New Mexico, take full responsibility {on. the nummary, conclusions, and recommendations contained in this report. Due to difficulties encou.nteM.ed in the recording process, it was not poi&ible to include a nummary of the discussions at the conclusion of each pn.edentatX.on a& is out usual ptactice. It is suggested that individuals interested in the subject of this meeting obtain copies of those publications referenced in the bibliography contained in the Summary and conclusions It is out intention to convene another symposium next yean, in Boulder during May to update and document the state-of-the-art oh laser damage in Optical Materials at that time. This meeting witl coven, the subject histonJically presented at these symposia, with additional emphasis on thin film damage, the problem of the damage of materials and components at 10.6 ym, as well as address ounselves to the subject of optical reliability as influenced by laser applications. We wish to encounage the reader to contact us on matters pertinent to the intent of these conferences. A. H. Guenther Library of Congress Catalog Card Number: 72-600276 iii Contents Page Foreword ..0.0...° « ..o . iii A. H. GmntheA. Summary and Conclusions . vii A. J. Gtai,6 and A. H. Guznthvi Opening Remarks 0 1 C. M. Stickley Laser Damage of HOYA Laser Glass, LCG-11 . 3 Tetsuro Iaumitani , Kosaku Hosaka and Chiyoe Yamanaka Interaction Gradients, Concurrent Light Scattering Experiments and Bulk Damage in Solids. 11 C. Y. She and David F. Edwards Optical Index Damage in Electrooptic Crystals 15 A. M. Glass, G. E. Peterson and T. J. Negran Comparison of Laser Induced Bulk Damage in Alkali-Halides at 10.6, 1.06, and 0.69 Microns 27 D. W. Fradin and Eli Yablonovitch Laser Induced Damage to Glass Surfaces 40 N. L. Boling and G. Dube 1 The Relation Between Surface Damage and Surface Plasma Formation 46 Concetto R. Giuliano Ion Beam Polishing as a Means of Increasing Surface Damage Thresholds in Sapphire..... 55 Concetto R. Giuliano Laser-Induced Damage Probability at 1.06 and 0.69 |-tm 58 Michael Bass and Harrison H. Barrett Damage to GaAs Surfaces from Ruby- and Nd-Glass Laser Illumination.. ........ 70 J. Lynn Smith Surface Science and Surface Damage ^ Jhan M. Khan Self-Focusing with Elliptical Beams John Marburger Relative Contribution of Kerr Effect and Electrostriction to Self-Focusing 92 Albert Feldman, Deane Horowitz and Roy M. Waxier Damage Measurements with Subnanosecond Pulses 100 John M. McMahon Time Resolved Damage Studies of Thin Films and Substrate Surfaces... J. H. Parks and N. Alyassini Laser Induced Damage to Mirrors at Two Pulse Durations..... E. S. Bliss and D. Milam Study of Laser-Irradiated Thin Films 123 Brian E. Newnam and L. G. DeShazer [nfluence of Structural Effects on Laser Damage Thresholds of Discrete and Inhomogeneous Thin Films and Multilayers..... 135 R. Russel Austin, Raymond C. Michaud, Arthur H. Guenther, Joseph