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Unique Hyperspectral Response Design in High-Speed Photodetectors Enabled by Periodic Surface Textures
Ahasan Ahamed1, Amita Rawat1, Ahmed S Mayet1
1Electrical and Computer Engineering, University of California Davis, 1207 Kemper, Davis, 95616, CA, USA.
Research Square
|July 28, 2023
Summary
Researchers developed photon-trapping surface textures (PTSTs) for miniaturized hyperspectral imaging sensors. This innovation enables cost-effective, on-chip spectrometers for diverse applications without complex optics.
Area of Science:
- Optoelectronics
- Photonics
- Materials Science
Background:
- Hyperspectral imaging (HSI) applications are expanding due to advancements in spectral response engineering, signal processing, and deep learning.
- Traditional HSI systems often require bulky filters and dispersion optics, limiting miniaturization and cost-effectiveness.
- There is a need for compact, integrated spectral sensing solutions for real-time data acquisition.
Conclusions:
- PTSTs enable detector-only spectral sensors, facilitating system miniaturization by eliminating external diffraction optics.
- Cost-effective, high-performance silicon photodetectors with engineered spectral responses are achievable.
- The developed technology supports the integration of on-chip spectrometers for compact, versatile, and real-time hyperspectral imaging systems.
Keywords:
Avalanche photodiodeshyperspectral imagingmultispectral imagingphoton-trapping featuresspectral response engineering
