Nathan Tessema Ersumo, Cem Yalcin, Nicolas C. Pégard, L. Waller, D. Lopez, R. Muller
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Concentric Micromirror Array for High-Speed Optical Dynamic Focusing
Optical dynamic focusing has emerged as a speed, complexity and efficiency bottleneck across various applications, which include scanning multi-photon microscopy in biology, maskless lithography and micromachining in material processing, and wavefront correction. Here, we present a 32-ring 23,852-pixel concentric micromirror array capable of performing dynamic focusing for wavelengths of up to 1040 nm with a response rate of up to 8.75 kHz, 30 V drive and a focusing full-width-halfmaximum to range ratio of 4.8%.
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