Beam-shaping element with reduced sensitivity to input variations.
We designed and fabricated a diffractive element for high-power laser beam shaping whose output is less sensitive to variations of input intensity and phase distributions. The choice of the initial solution is used as a degree of freedom to conduct the iterations to converge to a suboptimal solution that has the required property. We determined the initial phase by an aperture subdivision and stationary phase method, which is less sensitive to input variations. Experimental results are shown.
Chen
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Y
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.
Li
D
D
Sheng
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Y