Accession Number:

ADA064314

Title:

Beam Profiling of a Multimode Laser.

Descriptive Note:

Master's Thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1978-12-01

Pagination or Media Count:

92.0

Abstract:

The experimental investigation into the intensity profile characteristics of a multimode, high-power, continuous-wave, CO2 laser is presented. Quantitative one-dimensional profiles were obtained using an enhanced swept null point calorimeter. Qualitative two-dimensional profiles were obtained using the IR transparency material -- 3M, Type 577. The results were the beam divergence is 3.75 mrad the intensity profile is characterized basically by a circular mode pattern, but superimposed by a distinguishable rectangular component the rectangular component only varies in intensity proportional to the laser power and inversely proportional to the optical path length the shot stability is about or - 7 wsq cm and the average profile deviation from an idealized flat top profile varies from 11 to 15. Author

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE