laser speckle reducer

Posted by Alex Asanov on
URL: http://confocal-microscopy-list.275.s1.nabble.com/laser-speckle-reducer-tp7586081.html

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Dear Colleagues,

Does anyone know a laser speckle reducer, which twists, bends, and/or rotates optical fiber for temporal averaging of the speckles at the photodetector?  We have ~1W of visible light in a 100-micron fiber and have to return less coherent light back into a 100-um fiiber. Diffusers offered by Optotune and other vendors will not work. The best diffuser handles less than 600 W/cm2, while 1W in 100-um fiber translates into ~10,000W/cm. We can afford up to 40% losses, though.

Several years ago we worked with such speckle reducer made by a company from Montreal, Canada. It was a small black box fed by 5 or 12 VDC.
We need it urgently. Does anyone know a source? Thank you very much for your help.
Best regards,

Alexander Asanov, Ph.D.
President,  TIRF Labs
TIRF-Labs.com; TIRFmicroscopy.com
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