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The physical optics propagation feature can be used for problems where diffraction is important , including the propagation of laser beams , holography , and the coupling of light into single-mode optical fiber s. Zemax has a powerful suite of optimization tools that can be used to optimize a lens design by automatically adjusting parameters to maximize performance and reduce aberrations .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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