Thermal Blooming During Wind Turbulence, Numerical Model of Adaptive-Optics Systems, and Trichroic Beam Splitter for Deuterium Fluoride Chemical Lasers.(Selected Articles).

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Abstract:

There are various favorable and unfavorable effects on laser beam transmission due to atmospheric conditions, mainly in variable wind force and variable direction relative to height in the atmosphere, such as random up-and-down motion of wind and turbulence in the atmosphere. Usually, winds are favorable to restrain thermal blooming however, atmospheric turbulence mainly leads to the effect of beam expansion, and reduced beam coherence. The paper presents various wind models. Turbulence is simulated with multiphase shield, with the application of the Kolmogorov spectrum. In section II, fundamental equations are given. In section III, the selection principle of time and space step lengths are discussed. In section IV, the results of calculations are listed along with a brief analysis. In section V, several conclusions are provided in the stages of the study. p3 4

Author(s):
No Author(s) Identified
Author Organization(s):
NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
Supplementary Note:
Trans. of Qiangjiguang Yu Zizishu (China) (High Power Laser and Particle Beams) v6 n1 p1, 16-22, 59-64, 153-159 Feb 94.
Annotation:
Thermal Blooming During Wind Turbulence, Numerical Model of Adaptive-Optics Systems, and Trichroic Beam Splitter for Deuterium Fluoride Chemical Lasers.(Selected Articles). --Translation.
Pagination:
0050

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Availability: Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NAIC-ID(RS)T-0508-95
Monitor Series:
NAIC*
 Subject Terms
Joint Capability Areas:
JCA_1.3.2_Personnel Management; JCA_5.3_Planning; JCA_5_Command and Control; JCA_1.2.7_Experimentation; JCA_1.2.5_Lessons Learned
Modernization Areas:
Directed Energy
Communities of Interest:
Advanced Electronics
Descriptor(s):
*WIND, *TURBULENCE, *THERMAL BLOOMING, *FLUORIDES, *ADAPTIVE OPTICS, *CHEMICAL LASERS, *DEUTERIUM COMPOUNDS, MATHEMATICAL MODELS, COMPUTATIONS, WEATHER, MODELS, NUMERICAL ANALYSIS, COHERENCE, ATMOSPHERIC MOTION, LASER BEAMS, BEAM SPLITTING, PHASE, REDUCTION, TIME, VARIABLES, TRANSMITTANCE, SHIELDING, TRANSLATIONS, EXPANSION, EQUATIONS, SELECTION, CHINA, CHINESE LANGUAGE
Field(s)/Group(s):
Thermodynamics, Inorganic Chemistry, Lasers and Masers, Optics
Keyword(s):
*TRICHROIC BEAM SPLITTER, KOLMOGOROV SPECTRUM, FOREIGN REPORTS
Report Date:
1996 Mar 11