Acta Optica Sinica, Volume. 30, Issue 7, 2032(2010)
Near-Field Beam Shaping based on Liquid Crystal Spatial Light Modulator
Typical intensity distribution of laser beam is Gaussian profile. To improve the energy efficiency of the laser systems,it is necessory to convert Gaussian profiles or quasi-Gaussian profiles into uniform profiles. Based on the energy conservation and constant optical path-length principle,the spatial beam shaping system with aspheric lenses is analyzed in detail and the phase distribution for the optics is derived. In addition,a quasi-flattop intensity distribution is realized from the quasi-Gaussian beam by phase only liquid crystal spatial light modulator. The phase distribution of the shaped beam is measured by a wavefront sensor.
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Ma Haotong, Zhou Pu, Wang Xiaolin, Ma Yanxing, Wang Xiaobo, Xu Xiaojun, Liu Zejin. Near-Field Beam Shaping based on Liquid Crystal Spatial Light Modulator[J]. Acta Optica Sinica, 2010, 30(7): 2032
Category: Lasers and Laser Optics
Received: Sep. 3, 2009
Accepted: --
Published Online: Jul. 13, 2010
The Author Email: Haotong Ma (mahaotong@163.com)