Polychromatic metalens in the NIR for CO2 detection
To combat climate change, the world needs to reduce greenhouse gas emissions to net zero by 2050. To this end, we need accurate monitoring of greenhouse gases such as CO2. Currently, CO2 is monitored by satellites. While this provides a good global view of CO2 in the atmosphere, it is hard to get data in real-time and of a specific location. Therefore, a small optical system to monitor CO2 that can be put on a drone is desirable. In this work, we provide a first step to this optical system, creating a polychromatic metalens that focuses the light of wavelengths 0.76um, 1.61um, and 2.06um. The smallest wavelength of 0.76um is where O2 absorbs, and the wavelengths 1.61um and 2.06um are where CO2 absorbs.
Authors
- Joon‐Suh Park (ORCID: https://orcid.org/0000-0002-3235-5450)
- Raphaël Pestourie (ORCID: https://orcid.org/0000-0001-6267-8771)
- Vincent Ginis (ORCID: https://orcid.org/0000-0003-0063-9608)
- Federico Capasso (ORCID: https://orcid.org/0000-0003-4534-8249)
- Joeri Lenaerts (ORCID: https://orcid.org/0000-0002-6115-5298)
- Paul Chevalier (ORCID: https://orcid.org/0000-0001-5926-7138)
- Soon Wei Daniel Lim (ORCID: https://orcid.org/0000-0003-1689-6860)
- Maryna L. Meretska (ORCID: https://orcid.org/0000-0001-8749-9374)
- Davide Cassara (ORCID: https://orcid.org/0009-0004-4731-6608)
- Luca Sacchi
Institutions
- Georgia Institute of Technology (US)
- Vrije Universiteit Brussel (BE)
- Harvard University Press (US)
- Georgia Tech Research Institute
Publication Details
- Published
- 2025-03-19
- DOI
- https://doi.org/10.1117/12.3041398
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.00