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Geometrical theory of nonlinear phase distortion of intense laser beams
Phase distortion arising from whole beam self-focusing of intense laser pulses with arbitrary spatial profiles is treated in the limit of geometrical optics. The constant shape approximation is used to obtain the phase and angular distribution of the geometrical rays in the near field. Conditions for the validity of this approximation are discussed. Geometrical focusing of the aberrated beam is treated for the special case of a beam with axial symmetry. Equations are derived that show both the shift of the focus and the distortion of the intensity distribution that are caused by the nonlinear index of refraction of the optical medium. An illustrative example treats the case of beam distortion in a Nd:Glass amplifier.
Date:
May 7, 1975
Creator:
Glaze, J. A.; Hunt, J. T. & Speck, D. R.
System:
The UNT Digital Library
ERDA LWR plant technology program: role of government/industry in improving LWR performance
Information is presented under the following chapter headings: executive summary; LWR plant outages; LWR plant construction delays and cancellations; programs addressing plant outages, construction delays, and cancellations; need for additional programs to remedy continuing problems; criteria for government role in LWR commercialization; and the proposed government program.
Date:
October 7, 1975
Creator:
unknown
System:
The UNT Digital Library
Geothermal project description: LLL experimental site Salton Sea geothermal field
None
Date:
November 7, 1975
Creator:
Palmer, T. D. & Towse, D. F.
System:
The UNT Digital Library