Design of High Efficient Mid‐Wavelength Infrared Polarizer on ORMOCHALC Polymer
Abstract
While an organically modified chalcogenide (ORMOCHALC) can be used to fabricate a polymeric mid‐wavelength infrared (MWIR) polarizer with competitive extinction ratio compared to the commercial wire‐grid polarizers, which are composed of fragile inorganic materials, there is still a knowledge gap regarding the systematic design process to obtain high transmission efficiency and extinction ratio. To this end, a computational parameter study for design optimization is conducted with the geometric parameters of the bilayer grating ORMOCHALC polarizer. The computational study shows that the Fabry–Pérot cavity is the primary mechanism that determines the transmission behaviors and the extinction ratio. A bilayer grating design, guided by the parameter study, is realized through the thermal nanoimprint and metal deposition processes. The extinction ratios measured with the Fourier‐transform infrared are 245, 304, and 351 at the wavelength of 3, 4, and 5 µm, respectively. Compared to the state‐of‐the‐art of the polymeric MWIR linear polarizers, the extinction ratio is improved by 1.4 times, and the transmission efficiency is increased by 2.5 times. Theoretical analysis with the multiple‐layer model based on the transfer matrix method predicts a matched transmission behavior with the experiment and a full‐wave electromagnetic simulation.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 22, 2020
- Source ID
- 10.1002/mame.202000033
Entities
People
- Augustine M. Urbas
- Colin C. Baker
- Darryl A Boyd
- David A Czaplewski
- E. M. Smith
- Jan Genzer
- Jasbinder S. Sanghera
- Jason D. Myers
- Jong Eun Ryu
- Jun Oh Kim
- Md Didarul Islam
- Vinh Q. Nguyen
- Woohong Kim
- Yeongun Ko
- Zahyun Ku
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- Argonne National Laboratory
- KBR, Inc.
- North Carolina State University
- Office of Basic Energy Sciences
- United States Naval Research Laboratory