Measured statistics of laser beam scintillation in strong refractive turbulence relevant to eye safety

Journal Article · Tue Dec 01 00:00:00 EST 1987 · Health Phys.; (United States)

DOI:https://doi.org/10.1097/00004032-198712000-00007· OSTI ID:5516465

Hill, R J; Churnside, J H; Sliney, D H

The time series of irradiance from a diverged He-Ne laser were measured using receiver aperture sizes that simulate the day-adapted and night-adapted human pupil. The data are within the saturation-of-scintillation regime wherein the irradiance variance decreases with further increases of propagation distance and refractive turbulence strength. Irradiance probability distributions, as well as the joint statistics of irradiance and duration of large irradiance values, are presented. The ocular hazard contributed by scintillation is found to decrease with increases of range and/or refractive turbulence strength; this effect is independent of the decrease of mean irradiance associated with such increases of range and refractive turbulence strength.

• Research Organization: National Oceanic and Atmospheric Administration, Boulder, CO
• OSTI ID: 5516465
• Journal Information: Health Phys.; (United States), Vol. 53:6
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
LASER RADIATION
HEALTH HAZARDS
EYES
HELIUM-NEON LASERS
SAFETY
STATISTICS
TIME-SERIES ANALYSIS
BODY
BODY AREAS
ELECTROMAGNETIC RADIATION
FACE
GAS LASERS
HAZARDS
HEAD
LASERS
MATHEMATICS
ORGANS
RADIATIONS
SENSE ORGANS
560400* - Other Environmental Pollutant Effects