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24 May 2000 Methods for estimating beam parameters of superimposed Hermite-Gaussian modes
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Proceedings Volume 4089, Optics in Computing 2000; (2000)
Event: 2000 International Topical Meeting on Optics in Computing (OC2000), 2000, Quebec City, Canada
In many applications, it is necessary to evaluate the beam parameters of the basis Hermite-Gaussian functions which are used to decompose a given laser beam. This paper compares two methods for estimating the beam parameters, both of which are based on intensity measurement. One is an exact optimization method, which can find the optimal beam parameters but has high computational demands. The other is a moment method which requires less computation but only yields approximation to the optimal beam parameters and whose application is limited to beams close to Gaussian or a mixture of incoherent Hermite-Gaussian modes. It is found that the moment method can provide sufficiently accurate results in certain circumstances.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xin Xue and Andrew G. Kirk "Methods for estimating beam parameters of superimposed Hermite-Gaussian modes", Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000);


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