3D Printing ProcessesOptics

Nanoscribe presents 3D printed multi-level DOEs with submicron features

The 3D printed microstructures will be showcased at Photonics West 2019

Nanoscribe, a specialist in micrometer 3D printing, has fabricated multi-level diffractive optical elements (DOEs) using its recently released Photonic Professional GT2 3D printer. The 3D printed  microstructures will be presented at the upcoming Photonics West trade show for optics and photonics.

Multi-level DOE microstructures are becoming increasingly sought after in scientific research and certain industrial sectors. The tiny but complex devices can be used for a range of uses, including optical measuring, material processing and in security labels. Traditionally, however, multi-level DOEs are produced using planar lithography, which requires multiple steps.

Now, however, Nanoscribe has demonstrated how its own Photonic Professional GT2 3D printer can be be used to produce functional DOE prototypes and polymer masters for mass replication in a more cost-effective and streamlined way. Moreover, the high-resolution fabrication method enables the printing of submicron features and highly complex relief patterns.

Nanoscribe DOES

DOEs themselves allow for the modification of lasers. In more specific terms, when a laser is shone through the device’s microstructure pattern, it can be transformed into any wanted intensity shape in the far field. By modifying the microstructure designs of the multi-level DOE, output can be customized.

Using the Photonic Professional GT2, Nanoscribe has shown how multi-level DOEs with details as small as a few hundreds of nanometers can be produced in a single printing step. The printer uses a two-photon polymerization process which emits a laser into a photoresin material, curing the material in a very precise manner. The laser focus scans the photoresin layer by layer, building up the tiny structure. When the printed part is complete, it is treated in a developing bath to remove any unpolymerized resin.

To support the printing capability of multi-level DOEs, Nanoscribe offers a workflow that encompasses a DOE import tool, a software tool for print preparation as well as the printer. The software is capable of processing high resolution DOE designs in a similar way to how STL files are imported for 3D printing.

Nanoscribe DOEs

As the company explains: “A phase distribution image of the DOE, computed by an external program, is imported directly by the printer software. Thus, the software calculates a height profile from the phase distribution. With the DOE software recipe the 3D printer transforms the DOE design in an optimized microrelief pattern.”

Nanoscribe’s Photonic Professional GT2 3D printer, launched in December, can be used to rapidly produce multi-level DOE prototypes as well as polymer masters which can then be used for mass replication. The technology will be showcased at Photonics West in San Francisco from February 2 to 5, 2019.

Tags

Victor Anusci

Victor does not really exist. He is a pseudonym for several writers in the 3D Printing Media Network team. As a pseudonym, Victor has also had a fascinating made-up life story, living as a digital (and virtual) nomad to cover the global AM industry. He has always worked extra-hard whenever he was needed to create unique content, making it look like more people are working on this website than they really were. However, lately, as our editorial team has grown, he is mostly taking care of publishing press releases.

Related Articles

We use cookies to give you the best online experience. By agreeing you accept the use of cookies in accordance with our cookie policy.

Privacy Settings saved!
Privacy Settings

When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. Control your personal Cookie Services here.

These cookies are necessary for the website to function and cannot be switched off in our systems.

In order to use this website we use the following technically required cookies
  • PHPSESSID
  • wordpress_test_cookie
  • wordpress_logged_in_
  • wordpress_sec

Decline all Services
Accept all Services
Close
Close

STAY AHEAD

OF THE CURVE

Join industry leaders and receive the latest insights on what really matters in AM!

This information will never be shared with 3rd parties

I’ve read and accept the privacy policy.*

WELCOME ON BOARD!