Mode-switchable dual-color infrared quantum cascade detector
Photonics Research, ISSN: 2327-9125, Vol: 12, Issue: 2, Page: 253-259
2024
- 2Citations
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Article Description
In this paper, a patch-antenna-array enhanced quantum cascade detector with freely switchable operating modes among mid-wave, long-wave, and dual-color was proposed and discussed. The dual-color absorption occurs in a single active region through an optimized coupled miniband diagonal-transition subbands arrangement, and a successful separation of the operation regimes was realized by two nested antenna arrays with different patch sizes up to room temperature. At 77 K, the 5.7-μm channel achieved a peak responsivity of 34.6 mA/W and exhibited a detectivity of 2.0 × 10 Jones, while the 10.0-μm channel achieved a peak responsivity of 87.5 mA/W, giving a detectivity of 5.0 × 10 Jones. Under a polarization modulation of the incident light, the minimum cross talk of the mid-wave and the long-wave operating modes was 1:22.5 and 1:7.6, respectively. This demonstration opens a new prospect for multicolor infrared imaging chip integration technology. © 2024 Chinese Laser Press
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85184854437&origin=inward; http://dx.doi.org/10.1364/prj.509686; https://opg.optica.org/abstract.cfm?URI=prj-12-2-253; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=7682185&internal_id=7682185&from=elsevier; https://dx.doi.org/10.1364/prj.509686; https://opg.optica.org/prj/fulltext.cfm?uri=prj-12-2-253&id=545881
Optica Publishing Group
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