Tuning the refractive index in 3D direct laser writing lithography: towards GRIN microoptics

A Žukauskas, I Matulaitienė, D Paipulas… - Laser & Photonics …, 2015 - Wiley Online Library
We report a study of the determination of polymer cross‐linking, namely the degree of
conversion and refractive index of the microstructures created by two‐photon polymerization …

Arbitrary GRIN component fabrication in optically driven diffusive photopolymers

AC Urness, K Anderson, C Ye, WL Wilson… - Optics express, 2015 - opg.optica.org
We introduce a maskless lithography tool and optically-initiated diffusive photopolymer that
enable arbitrary two-dimensional gradient index (GRIN) polymer lens profiles. The …

Wavelength-scale light concentrator made by direct 3D laser writing of polymer metamaterials

J Moughames, S Jradi, TM Chan, S Akil, Y Battie… - Scientific reports, 2016 - nature.com
We report on the realization of functional infrared light concentrators based on a thick layer
of air-polymer metamaterial with controlled pore size gradients. The design features an …

Patterned silver nanoparticles embedded in a nanoporous smectic liquid crystalline polymer network

D Dasgupta, IK Shishmanova… - Journal of the …, 2013 - ACS Publications
Patterned Silver Nanoparticles embedded in a Nanoporous Smectic Liquid Crystalline Polymer
Network | Journal of the American Chemical Society ACS ACS Publications C&EN CAS Find my …

Putting a new spin on it: gradient centrifugation for analytical and preparative applications

A Spinnrock, H Cölfen - Chemistry–A European Journal, 2019 - Wiley Online Library
Gradient centrifugation is an important technique in chemistry, biology, materials science
and engineering. It has big potential beyond the well‐known centrifugation for separation of …

Fabrication of Optical Microstructures with Gradient Refractive Index by Two-Photon Laser Lithography

MD Aparin, TG Baluyan, MI Sharipova… - Bulletin of the Russian …, 2023 - Springer
The method of two-photon lithography is used to fabricate microstructures with gradient of
refractive index. The rectangular structures with sizes 25× 25× 3 μm were fabricated with …

Process equipped with a sloped UV lamp for the fabrication of gradient-refractive-index lenses

JH Liu, YH Chiu - Optics letters, 2009 - opg.optica.org
In this investigation, a method for the preparation of gradient-refractive-index (GRIN) lenses
by UV-energy-controlled polymerization has been developed. A glass reaction tube …

Deflectometry for measuring inhomogeneous refractive index fields in two-dimensional gradient-index elements

D Lin, J Teichman, JR Leger - JOSA A, 2015 - opg.optica.org
We present a numerical method for calculating inhomogeneous refractive index fields in
rectangular gradient-index (GRIN) elements from measured boundary positions and slopes …

3d microoptics via ultrafast laser writing: Miniaturization, integration, and multifunctionalities

S Varapnickas, A Žukauskas, E Brasselet… - … Using Two-Photon …, 2020 - Elsevier
Trends of evolving technology usually are based on miniaturization and increasing
complexity of devices or combining both of them. Three-dimensional (3D) laser structuring of …

3D micro-optics via ultrafast laser writing: miniaturization, integration, and multifunctionalities

A Žukauskas, M Malinauskas, E Brasselet… - … Using Two-photon …, 2016 - Elsevier
Advances of the growing field of micro-optical elements and components created via direct
laser writing (DLW) are overviewed. The basic principles and the most recent developments …