
Beyond the free spectral range : on-chip spectrometer with multi-color cascaded colloidal quantum-dot photodiodes
- Author
- Chao Pang (UGent) , Raúl López March, Ezat Kheradmand (UGent) , Yuhao Deng (UGent) , Luis Moreno Hagelsieb, Lukas Elsinger, David Cheyns, Pieter Geiregat (UGent) , Zeger Hens (UGent) and Dries Van Thourhout (UGent)
- Organization
- Abstract
- Colloidal quantum dots (QDs), as a low-cost, flexibly tunable and fabrication scalable semiconductor material, have demonstrated exceptional capabilities in many complex applications including high-quality displays, high-resolution infrared imaging, advanced spectrometry and integration into photonic circuits. This study explores combining the tunable spectral response features of QD-based photodiodes (QDPDs) with dispersive photonic integrated circuits (PICs), demonstrating a spectrometer with operational spectral range extended beyond its original free spectral range (FSR). Experimentally, two types of PbS QDPDs, with different absorption features, were integrated in cascade on the output channels of a planar concave grating (PCG) with a 90 nm FSR. The differential responses of these QDPDs to two adjacent diffraction orders of the PCG enabled the creation of a spectrometer with a spectral range of approximately 180 nm, effectively decoupling two FSRs of the PCG. The proposed cascaded QDPDs, with diverse spectral photodetection capabilities, present great potential when integrated into complex optical systems.
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Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01J3JAAVBNNFZP7T2BQ8ZWZMQA
- MLA
- Pang, Chao, et al. “Beyond the Free Spectral Range : On-Chip Spectrometer with Multi-Color Cascaded Colloidal Quantum-Dot Photodiodes.” The 25th European Conference on Integrated Optics : Proceedings of ECIO 2024, June 17–19, Aachen, Germany, edited by Jeremy Witzens et al., vol. 402, Springer, 2024, pp. 176–81, doi:10.1007/978-3-031-63378-2_28.
- APA
- Pang, C., López March, R., Kheradmand, E., Deng, Y., Hagelsieb, L. M., Elsinger, L., … Van Thourhout, D. (2024). Beyond the free spectral range : on-chip spectrometer with multi-color cascaded colloidal quantum-dot photodiodes. In J. Witzens, J. Poon, L. Zimmermann, & W. Freude (Eds.), The 25th European conference on integrated optics : proceedings of ECIO 2024, June 17–19, Aachen, Germany (Vol. 402, pp. 176–181). https://doi.org/10.1007/978-3-031-63378-2_28
- Chicago author-date
- Pang, Chao, Raúl López March, Ezat Kheradmand, Yuhao Deng, Luis Moreno Hagelsieb, Lukas Elsinger, David Cheyns, Pieter Geiregat, Zeger Hens, and Dries Van Thourhout. 2024. “Beyond the Free Spectral Range : On-Chip Spectrometer with Multi-Color Cascaded Colloidal Quantum-Dot Photodiodes.” In The 25th European Conference on Integrated Optics : Proceedings of ECIO 2024, June 17–19, Aachen, Germany, edited by Jeremy Witzens, Joyce Poon, Lars Zimmermann, and Wolfgang Freude, 402:176–81. Cham: Springer. https://doi.org/10.1007/978-3-031-63378-2_28.
- Chicago author-date (all authors)
- Pang, Chao, Raúl López March, Ezat Kheradmand, Yuhao Deng, Luis Moreno Hagelsieb, Lukas Elsinger, David Cheyns, Pieter Geiregat, Zeger Hens, and Dries Van Thourhout. 2024. “Beyond the Free Spectral Range : On-Chip Spectrometer with Multi-Color Cascaded Colloidal Quantum-Dot Photodiodes.” In The 25th European Conference on Integrated Optics : Proceedings of ECIO 2024, June 17–19, Aachen, Germany, ed by. Jeremy Witzens, Joyce Poon, Lars Zimmermann, and Wolfgang Freude, 402:176–181. Cham: Springer. doi:10.1007/978-3-031-63378-2_28.
- Vancouver
- 1.Pang C, López March R, Kheradmand E, Deng Y, Hagelsieb LM, Elsinger L, et al. Beyond the free spectral range : on-chip spectrometer with multi-color cascaded colloidal quantum-dot photodiodes. In: Witzens J, Poon J, Zimmermann L, Freude W, editors. The 25th European conference on integrated optics : proceedings of ECIO 2024, June 17–19, Aachen, Germany. Cham: Springer; 2024. p. 176–81.
- IEEE
- [1]C. Pang et al., “Beyond the free spectral range : on-chip spectrometer with multi-color cascaded colloidal quantum-dot photodiodes,” in The 25th European conference on integrated optics : proceedings of ECIO 2024, June 17–19, Aachen, Germany, 2024, vol. 402, pp. 176–181.
@inproceedings{01J3JAAVBNNFZP7T2BQ8ZWZMQA, abstract = {{Colloidal quantum dots (QDs), as a low-cost, flexibly tunable and fabrication scalable semiconductor material, have demonstrated exceptional capabilities in many complex applications including high-quality displays, high-resolution infrared imaging, advanced spectrometry and integration into photonic circuits. This study explores combining the tunable spectral response features of QD-based photodiodes (QDPDs) with dispersive photonic integrated circuits (PICs), demonstrating a spectrometer with operational spectral range extended beyond its original free spectral range (FSR). Experimentally, two types of PbS QDPDs, with different absorption features, were integrated in cascade on the output channels of a planar concave grating (PCG) with a 90 nm FSR. The differential responses of these QDPDs to two adjacent diffraction orders of the PCG enabled the creation of a spectrometer with a spectral range of approximately 180 nm, effectively decoupling two FSRs of the PCG. The proposed cascaded QDPDs, with diverse spectral photodetection capabilities, present great potential when integrated into complex optical systems.}}, author = {{Pang, Chao and López March, Raúl and Kheradmand, Ezat and Deng, Yuhao and Hagelsieb, Luis Moreno and Elsinger, Lukas and Cheyns, David and Geiregat, Pieter and Hens, Zeger and Van Thourhout, Dries}}, booktitle = {{The 25th European conference on integrated optics : proceedings of ECIO 2024, June 17–19, Aachen, Germany}}, editor = {{Witzens, Jeremy and Poon, Joyce and Zimmermann, Lars and Freude, Wolfgang}}, isbn = {{9783031633775}}, issn = {{0930-8989}}, language = {{eng}}, pages = {{176--181}}, publisher = {{Springer}}, title = {{Beyond the free spectral range : on-chip spectrometer with multi-color cascaded colloidal quantum-dot photodiodes}}, url = {{http://doi.org/10.1007/978-3-031-63378-2_28}}, volume = {{402}}, year = {{2024}}, }
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