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Pages: 24-26.
Full text of article: Russian language.
Abstract:
In [1, 2], it was shown theoretically that one-dimensional Gaussian-Hermite modes (GH) can be formed efficiently by using phase binary DOEs obtained using the sign function of the corresponding Hermite polynomial. When such DOE is illuminated by a plane light beam with an optimal aperture, the required mode is formed with an efficiency of more than 80% in the far diffraction zone.
In [3], a 16-level phase DOE was produced and tested to form a GH laser mode (1,0). It was produced using the electron-beam lithography technology by etching polymethyl methacrelate coated on a quartz glass substrate. This element was designed using the iterative procedure proposed in [4]. The array dimension was 2048x2048 samples. The theoretical efficiency was 45.5%, and the efficiency measured experimentally was 37.7%.
Citation:
Khonina SN, Kotlyar VV, Soifer VA, Honkanen M, Turunen J. Formation of Gaussian-Hermite modes using binary DOEs. I. Simulation and experiment. Computer Optics 1998; 18: 24-28.
References:
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