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Semiconductors

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There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
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Related Experiment Video

Updated: Jan 23, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

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Published on: August 5, 2013

Infrared spectral filter based on all-semiconductor guided-mode resonance.

Clément Maës, Grégory Vincent, Fernando González-Posada Flores

|June 15, 2019

Summary

We developed novel guided-mode resonant spectral filters using III-V semiconductors for long-wave infrared applications. These filters are designed for colorizing infrared photodetectors, enhancing their functionality.

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Last Updated: Jan 23, 2026

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Area of Science:

Optoelectronics
Materials Science
Infrared Technology

Background:

Guided-mode resonance (GMR) spectral filters offer precise wavelength selectivity.
Long-wave infrared (LWIR) photodetectors are crucial for various imaging applications.
Integrating spectral filtering with photodetectors can enhance performance and enable new functionalities like color imaging.

Purpose of the Study:

To theoretically and experimentally investigate GMR spectral filters operating in the LWIR range.
To develop GMR filters using III-V semiconductors compatible with Type 2 super lattice LWIR photodetector fabrication.
To explore the application of these GMR filters for the colorization of LWIR photodetectors.

Main Methods:

Theoretical modeling of GMR filter behavior in the LWIR spectrum.
Experimental fabrication of GMR filters using InAsSb (grating) and GaSb (waveguide).
Material characterization and optical performance testing of the fabricated filters.

Main Results:

Demonstrated successful fabrication of LWIR GMR filters using III-V semiconductors.
Validated theoretical predictions with experimental results for GMR filter performance.
Confirmed material compatibility with epitaxial growth of Type 2 super lattice LWIR photodetectors.

Conclusions:

III-V semiconductor-based GMR filters are viable for LWIR spectral filtering.
The developed GMR filters are suitable for integration with LWIR photodetectors for colorization.
This work advances the development of advanced infrared imaging technologies.