Polarization sensitive Quantum Well Infrared Photodetectors
Purpose and goal
The purpose of the project is to develop a detector matrix that is sensitive to the polarisation of infrared light and also to evaluate this detector matrix in a demonstration camera. The first objective is to visually demonstrate the advantages of this technology using the demonstration camera. The second objective is to strengthen the network of companies, research institutes and end users of infrared detectors in Sweden. The third objective is to increase the usage of infrared detectors, for example for automated detection of oil spills at sea to improve the maritime environment.
Expected results and effects
This project is expected to trigger further collaboration between IRnova and FOI, who are partners in this project. Furthermore,it is anticipated that this project will give enhanced collaboration possibilities with companies and authorities that are part of the Swedish IR network and that are the predicted users of this technology. The results in this project will be the starting point for new products and new markets for IRnova and will enable novel applications for FOI.
Planned approach and implementation
IRnova is responsible for the design and fabrication of the detector matrix. The design will be based on a quantum well detector that is sensitive to infrared light. A linear grating will be fabricated on top of the pixels in the detector matrix to make them sensitive to the polarisation of the incident infrared radiation. The detector matrix will be integrated in a demonstrator camera. FOI will evaluate the camera to see how sensitive it is to different polarisations and to investigate the enhanced image contrast that can be obtained using the polarisation information in the image.