Fabrication and characterization of optical filters from polymeric aerogels loaded with diamond scattering particles
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866916209330487296 |
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| author | Barlis, Alyssa Guo, Haiquan Helson, Kyle Bennett, Charles Chan, Yan Yan Marriage, Tobias Quijada, Manuel Tokarz, Ariel Vivod, Stephanie Wollack, Edward Essinger-Hileman, Thomas |
| author_facet | Barlis, Alyssa Guo, Haiquan Helson, Kyle Bennett, Charles Chan, Yan Yan Marriage, Tobias Quijada, Manuel Tokarz, Ariel Vivod, Stephanie Wollack, Edward Essinger-Hileman, Thomas |
| contents | We have developed a suite of infrared-blocking filters made by embedding diamond scattering particles in a polyimide aerogel substrate. We demonstrate the ability to tune the spectral performance of the filters based on both the composition of the base aerogel material and the properties of the scattering particles. We summarize the fabrication, optical modeling, and characterization of these filters. We investigate two polyimide base aerogel formulations and the effects of loading them with diamond scattering particles of varying sizes and relative densities. We describe a model for the filters' behavior using a combination of Maxwell Garnett and Mie Scattering techniques. We present optical characterization results for diamond-loaded aerogel filters with cutoff frequencies (50% transmittance) ranging between 2.5 and 15 THz, and confirm that the measured spectral performance is in agreement with our optical models. We also measure the filters' refractive index in the microwave and report findings in agreement with Maxwell Garnett model predictions (typically n < 1.08). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_16364 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fabrication and characterization of optical filters from polymeric aerogels loaded with diamond scattering particles Barlis, Alyssa Guo, Haiquan Helson, Kyle Bennett, Charles Chan, Yan Yan Marriage, Tobias Quijada, Manuel Tokarz, Ariel Vivod, Stephanie Wollack, Edward Essinger-Hileman, Thomas Instrumentation and Methods for Astrophysics We have developed a suite of infrared-blocking filters made by embedding diamond scattering particles in a polyimide aerogel substrate. We demonstrate the ability to tune the spectral performance of the filters based on both the composition of the base aerogel material and the properties of the scattering particles. We summarize the fabrication, optical modeling, and characterization of these filters. We investigate two polyimide base aerogel formulations and the effects of loading them with diamond scattering particles of varying sizes and relative densities. We describe a model for the filters' behavior using a combination of Maxwell Garnett and Mie Scattering techniques. We present optical characterization results for diamond-loaded aerogel filters with cutoff frequencies (50% transmittance) ranging between 2.5 and 15 THz, and confirm that the measured spectral performance is in agreement with our optical models. We also measure the filters' refractive index in the microwave and report findings in agreement with Maxwell Garnett model predictions (typically n < 1.08). |
| title | Fabrication and characterization of optical filters from polymeric aerogels loaded with diamond scattering particles |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2401.16364 |