Engineering the temporal dynamics of all-optical switching with fast and slow materials.

Autor: Saha S; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA.; Argonne National Laboratory, Lemont, IL, 60439, USA., Diroll BT; Argonne National Laboratory, Lemont, IL, 60439, USA., Ozlu MG; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA., Chowdhury SN; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA., Peana S; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA., Kudyshev Z; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA., Schaller RD; Argonne National Laboratory, Lemont, IL, 60439, USA., Jacob Z; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA.; Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, IN, USA., Shalaev VM; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA.; Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, IN, USA., Kildishev AV; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA.; Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, IN, USA., Boltasseva A; School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA. aeb@purdue.edu.; Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, IN, USA. aeb@purdue.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Sep 21; Vol. 14 (1), pp. 5877. Date of Electronic Publication: 2023 Sep 21.
DOI: 10.1038/s41467-023-41377-5
Abstrakt: All-optical switches control the amplitude, phase, and polarization of light using optical control pulses. They can operate at ultrafast timescales - essential for technology-driven applications like optical computing, and fundamental studies like time-reflection. Conventional all-optical switches have a fixed switching time, but this work demonstrates that the response-time can be controlled by selectively controlling the light-matter-interaction in so-called fast and slow materials. The bi-material switch has a nanosecond response when the probe interacts strongly with titanium nitride near its epsilon-near-zero (ENZ) wavelength. The response-time speeds up over two orders of magnitude with increasing probe-wavelength, as light's interaction with the faster Aluminum-doped zinc oxide (AZO) increases, eventually reaching the picosecond-scale near AZO's ENZ-regime. This scheme provides several additional degrees of freedom for switching time control, such as probe-polarization and incident angle, and the pump-wavelength. This approach could lead to new functionalities within key applications in multiband transmission, optical computing, and nonlinear optics.
(© 2023. Springer Nature Limited.)
Databáze: MEDLINE
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