Rapid, high-precision 3D printing on the nanometer to centimeter scale

Houbertz, R.; Stender, Benedikt

doi:10.1117/2.1201611.006770

Cited by 1 publication

(2 citation statements)

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“…High-precision 3D printing via nonlinear two-photon absorption (TPA) provides a unique real 3D technique based on femtosecond laser pulses [1], suitable for the fabrication of optically smooth surfaces [2]. Due to the nature of the non-linear process, the intensity is only high enough in the strongly confined focal volume to initiate a reaction in a material.…”

Section: Fabrication Without Limitmentioning

confidence: 99%

“…To speed up the process, either dx or dz can be increased, but the optical quality of the fabricated microlens is decreasing if these parameters exceed about 300 nm. Depending on the fabrication parameters, an optical surface quality with an rms roughness of less than 10 nm can be easily achieved using, e.g., inorganic-organic hybrid polymers [2]. The fabrication time for an individual microlens, however, is very high compared to other fabrication strategies (see below).…”

Section: Speed-up Fabricationmentioning

confidence: 99%

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From Lab to Fab — High‐Precision 3D Printing

Stender¹,

Mantei²,

Houbertz

2017

Laser Technik Journal

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The demand of sophisticated components is continuously increasing, driven by big data, IoT, and Industry 4.0. Reducing process cost is impacting all levels in a vast majority of products. 3D printing is typically restricted to additive fabrication within one material class, structures are limited in size, shape, surface finish, requiring supporting structures. This prevents high quality photonic components. High precision 3D printing is utilizing a multiphoton process which is a powerful tool for prototyping of miniaturized designs in automated, scalable processes for products in photonic or medical packaging. While most of the 3D systems are still working rather on a lab than on an industrial scale with typically very long fabrication times ranging from minutes to hours for a single microlens, the process can be boosted significantly to a fabrication time in the range of seconds per lens using different fabrication strategies, resulting in microlenses with high optical quality. This saves more than 90 % of the fabrication time compared to standard fabrication, and 1 cm2 lens arrays with high filling factors can be fabricated within only a few hours — a big step towards high throughput and industrial scalability.

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Section: Fabrication Without Limitmentioning

confidence: 99%

Section: Speed-up Fabricationmentioning

confidence: 99%