Effects of gaussian beam size on diffraction measurement errors
- 61 Downloads
A numerical simulation has been performed for the diffraction of a gaussian beam at a wire in the Fraunhofer approximation. The wire is symmetrically disposed with respect to the beam axis in the calculations on the shifts in the diffraction minima, while an unsymmetrical position has been used in calculating the diffraction pattern, which is characterized by change in the minima and maxima. Conditions are evaluated under which one can use the homogeneous-beam approximation in diffraction measurements.
KeywordsPower Density Gaussian Beam Beam Axis Wire Diameter Beam Radius
Unable to display preview. Download preview PDF.
- 1.B. S. Rinkevicius, in: Laser Flow Diagnosis, V. A. Fabrikant (ed.) [in Russian], Izd. MEI, Moscow (1990).Google Scholar
- 2.K. I. Krylov, V. T. Prokopenko, and A. S. Mitrofanov, Applications of Lasers in Engineering and Instrumentation [in Russian], Mashinostroenie, Leningrad (1978).Google Scholar
- 4.Yu. M. Klimkov, Design Principles for Optoelectronic Instruments, Containing Lasers [in Russian], Sov. Radio, Moscow (1978).Google Scholar
- 5.V. A. Grechikhin et al., Optical Methods and Data Proceessing in Heat and Fluid Flow, Mechanical Engineering Publ., London (1996), p. 393.Google Scholar