Accession Number:

AD0489118

Title:

GLASS LASER DAMAGE RESEARCH.

Descriptive Note:

Semiannual technical rept. Jan-30 Jun 66,

Corporate Author:

CORNING GLASS WORKS NY

Personal Author(s):

• Maurer, R. D.
• Lester, W. W.
• Vance, M. E.

Report Date:

1966-08-01

Pagination or Media Count:

26.0

Abstract:

Previous data on laser damage in glass are difficult to interpret because of incomplete characterization of the experiments. Several points such as heat removal from the light focus, aberrations and optical absorption are being investigated to eliminate extraneous factors. Methods for measuring the distribution of light beam intensity, so that the focus can be characterized, have been set up. Preliminary damage data are given on four glasses which correlate with optical absorption, except in the case of a neodymium containing glass. A damage mechanism due to the neodymium ion is postulated and future methods for investigating it are described. Ultrasonic waves induced in glass by a Q-switched laser are being measured to test their relevancy to damage. The theory of generation by non-linear mixing through electrostriction and by optical absorption are treated. The data for 266Kc sound waves are given and shown to be in reasonable accord with the theory. Author

Descriptors:

• *DAMAGE
• *LASERS
• GLASS
• FOCUSING
• BEAMS(ELECTROMAGNETIC)
• INTENSITY
• ABSORPTION SPECTRA
• ABSORPTION
• NEODYMIUM
• ULTRASONIC RADIATION
• ULTRASONIC PROPERTIES
• NONLINEAR SYSTEMS
• ELECTROSTRICTION
• ENERGY
• IRON
• EXCITATION
• ATOMIC ENERGY LEVELS
• OPTICAL PROPERTIES
• LIGHT
• DISTRIBUTION
• DISTRIBUTION

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE