A5088517007- Photonic and Optical Devices
- Photonic Crystals and Applications
- Optical Coatings and Gratings
- Electron and X-Ray Spectroscopy Techniques
- Optical Coherence Tomography Applications
- Advanced Materials Characterization Techniques
- Surface and Thin Film Phenomena
- Near-Field Optical Microscopy
- Terahertz technology and applications
- Advanced Fiber Laser Technologies
- Microwave Engineering and Waveguides
- Nonlinear Optical Materials Studies
- Gyrotron and Vacuum Electronics Research
University of Illinois Urbana-Champaign
2020-2023
Goddard College
2021
Abstract Direct laser writing (DLW) has been shown to render 3D polymeric optical components, including lenses, beam expanders, and mirrors, with submicrometer precision. However, these printed structures are limited the refractive index dispersive properties of photopolymer. Here, we present subsurface controllable via exposure (SCRIBE) method, a lithographic approach that enables tuning over range greater than 0.3 by performing DLW inside photoresist-filled nanoporous silicon silica...
Determining composition of Li-ion battery (LIB) cathodes at the nanoscale is important to understanding cathode performance. However, in widely adopted layered transition metal oxide materials, high crystallographic...
Multiphoton lithography inside a mesoporous host can create optical components with continuously tunable refractive indices in three-dimensional (3D) space. However, the process is very sensitive at exposure doses near photoresist threshold, leading previous work to reliably achieve only fraction of available index range for given material system. Here, we present method greatly enhancing uniformity subsurface micro-optics, increasing reliable from 0.12 (in prior work) 0.37 and decreasing...
Photonic integrated circuits (PICs) are vital for high-speed data transmission. However, optical routing is limited in PICs composed of only one or a few stacked planes. Further, coupling losses must be low deployed systems. Previously, we developed the subsurface controllable refractive index via beam exposure (SCRIBE) technique to write accurate 3D gradient (GRIN) profiles within mesoporous silica scaffold. Here, apply SCRIBE fabricate loss, broadband, polarization insensitive,...
We present an overview of a new method to print 3D volumetric gradient index (GRIN) micro-optics inside porous silica scaffold and show results for the focusing properties array cylindrical GRIN lenses.