An. Alekseev et al., CONVERSION OF HERMITE-GAUSSIAN AND LAGUERRE-GAUSSIAN BEAMS IN AN ASTIGMATIC OPTICAL-SYSTEM - 1 - EXPERIMENT, Technical physics letters, 24(9), 1998, pp. 694-696
The workings of a mode converter providing energy-effective conversion
of an Hermite-Gaussian beam to a Laguerre-Gaussian beam and vice vers
a are analyzed experimentally. The converter is an astigmatic Fourier
transformer consisting of a system of two cylindrical lenses with perp
endicular principal planes lying between two spherical lenses. It is s
hown that this device is less sensitive to the mating of the astigmati
c elements. (C) 1998 American Institute of Physics.