UNCLASSIFIED AD NUMBER LIMITATION CHANGES TO: FROM: AUTHORITY THIS PAGE IS UNCLASSIFIED AD826770 Approved for public release; distribution is unlimited. Distribution authorized to U.S. Gov't. agencies and their contractors; Critical Technology; AUG 1967. Other requests shall be referred to Office of Naval Research, Washington, DC 20360. This document contains export-controlled technical data. onr notice, 27 jul 1971
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UNCLASSIFIED AD NUMBER LIMITATION CHANGES graphite, boron nitride, and a variety of refractory metallic and intermetalllc compounds. Although these materials have not enjoyed great
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UNCLASSIFIED
AD NUMBER
LIMITATION CHANGESTO:
FROM:
AUTHORITY
THIS PAGE IS UNCLASSIFIED
AD826770
Approved for public release; distribution isunlimited.
Distribution authorized to U.S. Gov't. agenciesand their contractors; Critical Technology; AUG1967. Other requests shall be referred toOffice of Naval Research, Washington, DC 20360.This document contains export-controlledtechnical data.
onr notice, 27 jul 1971
• • )
Lexington Laboratories, Inc. 84 SHERMAN STREET
CAMBRIDGE, MASS. 02140
Area Code 617 • 864 5020
VAPOR PHASE GRCWl'H OF RUBY :~ :A~OCRYSTALS
Final Technical Summary Report
1 May 1964 - 31 August 1967
Robert c. Fo1wei1er - Author
Contract No. Nonr-4574(00)-2 ARPA Order - 306
December 1967
T!ois documttnt is subie~t to epecial c..,. pnt co~1trols T'd .J r:', tt'll'lsmittal lo fowi ; 1 gcvcc• nc t> b.oi ·n nn· tlo J::; r:~ __ TJ ;:} it:,,:·. t' J.cto may htJ tTl. ( 1 ~ r ~~, .. ,j · p : . .)t r·'':l. ',7..,~ of P1--t·)ir::: ,; :• 11 :·.) •. ~ . ,_., ·" · o of
N .;vol no~e.J.rc'·, 'V'I s!1i JlO'l, DC. 1' ·e db :ibdio 1 of his d:.:._ c:mel'lt is limitod because the info>maticm is embargoed under the Department 81 5tate lUARs.
VAPOR PHASE GRCWTH OF RUBY MONOCRYSTALS
Final Technical Summary Report
I May 1964 - 31 August 1967
Robert C. Folweiler - Author
Contract No. Nonr-4574(00)-2 ARPA Order - 306
December 1967
This research is part of Project DEFENDER, sponsored by Advanced Research Projects Agency, Department of Defense and technically monitored by the Office of Naval Research (Physics Branch).
Reproduction in whole or in part is permitted by the S . Government. GiaiHiriHriBBHBtiäriMninBHMMMHlHOTMV
This document is subject to special export controls and each transmittal to foreign governments, foreign na- tionals or representative;! thereto may be made only wilh piior approval of Physics Branch (Code 421), Office of Naval Research, Washington, D.C.
BLANK PAGE
POREWORD
This report was prepared by Robert C. Polweiler of
eARPA Order 306 Physics Branch (Code Naval Research, Washhigt
h^tMmsmittwl«'» R«PORT NUMRBRCS;
, foreign na- 3 thereto may
pnpi approval of ORT NOT«; (Anyolhat timi may ft« maal0\ad
10. AVAILABILITY/LIMITATION NOTICES
may obtain copies of this report from DDC. IQualified requestors
II. SUPRLBMCNTAIIV NOTES
Research is part of Project DEFENDER
12. SPONSORING MILITARY ACTIVITY
Office of Naval Research Department of the Navy Washington, D. C.
Improvements in apparatus nnd control of process parameters have led to the growth of a ruby weighing more than 200 grams. Several major limiting features of the process including furnace size, crystal purity« doping techniques, and pumping systems improved in conjunction with a continuing study of process parame- ters. ^-si^ii£i^««xt bseelÄhrtragh was raerde vmen P furnace con- struction technique was developed which did not limit furnace size. A four inch inside diameter furnace was constructed using this technique and has performed satisfactorily. In an investigation of doping techniques, additional sources of chromium vapor have been investigated, and jhromyl chloride (CrC^C^) has proved to be satis* factory. ^-
Previous measurements of laser characteristics determined have demonstrated that vapor grown ruby is of high optical quality and compares favorably to other available crystals in pumping beha 'ior, light scattering, and interferoraatric properties H t1^
DD FORM I JAN «4 1473 -19- unclassified
Saevrity ClaasificattM
gnclwifitd Security Classification
tr KEY WORDS
LINK A
neue «VT
LIMK ■ LINK C
MOO
Crystal Growth Ruby Lasers Chemical Vapor Deposition Vapor Phase Growth
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