Higher--order CO/sub 2/ laser beam spot size and depth of focus determined

Journal Article · Mon Jun 01 00:00:00 EDT 1981 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.20.001933· OSTI ID:6459835

Luxon, J T; Parker, D E

Measurements of higher-order CO/sub 2/ laser beam spot size have been made and found in good agreement with a Hermite-Gaussian rectangular beam propagation model. A modified working definition of spot size is introduced, and a useful depth of focus relationship is presented. It is shown that a single measurement of spot size for any higher-order mode is all that is required to reasonably predict spot size for the same laser operating in different modes. Alternatively, beam size can be predicted theoretically on the basis of the optical cavity parameters.

• Research Organization: General Motors Institued, Flint, Michigan 48502
• OSTI ID: 6459835
• Journal Information: Appl. Opt.; (United States), Vol. 20:11
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CARBON DIOXIDE LASERS
FOCUSING
LASER RADIATION
DIMENSIONS
DEPTH
MATHEMATICAL MODELS
OPTICAL MODES
ELECTROMAGNETIC RADIATION
GAS LASERS
LASERS
OSCILLATION MODES
RADIATIONS
420300* - Engineering- Lasers- (-1989)