15 February 2010 A new method for laser speckle suppression
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Proceedings Volume 7618, Emerging Liquid Crystal Technologies V; 76180A (2010) https://doi.org/10.1117/12.847221
Event: SPIE OPTO, 2010, San Francisco, California, United States
The objective of this work is the suppression of speckles in an image illuminated by a remote laser. This is accomplished by a novel method in which the illuminating laser beam propagates through a multimode fiber dithered at an arbitrary section, then passes through a microlens array prior to illuminating the image generator. Thereby the speckle contrast is reduced to its minimum value for dithering frequencies of at least 25 Hz, attaining a magnitude speckle contrast of less than 12%, and illumination homogeneity across the illumination filed of less than 20%.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael Tilleman, "A new method for laser speckle suppression", Proc. SPIE 7618, Emerging Liquid Crystal Technologies V, 76180A (15 February 2010); doi: 10.1117/12.847221; https://doi.org/10.1117/12.847221


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