We report on the 3D printing of high transparency and resiliency free-form micro-optics. The fabrication is realized employing combining femtosecond laser direct write 3D nanolithography (fs-LDW or a.k.a. two-photon polymerization) with high temperature calcination (sintering) and atomic layer deposition (ALD) techniques. The developed approach allows production of diverse single optical elements and stacked components ranging in dimensions from 10 to 100 µm. Produced micro-optic objects are characterized of their optical performance (focusing, imaging, transparency) and determining their laser induced damage threshold (LIDT). This opens novel applications of laser 3D printed microoptics under harsh conditions: radiation, temperature, acidic environment, pressure variations.
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