Parametric Amplification of Optical Pulses through Synthetic Motion in a Time-Varying Medium
, transitioning from conventional two-beam coupling to a regime dominated by time refraction. In a subwavelength-thick indium tin oxide film, we demonstrate significant probe amplification that overcomes the material's strong absorption. Our findings reveal that strong optical nonlinearities enable qualitatively new parametric processes, opening pathways for ultrashort-pulse amplification via dynamic metasurfaces and optical nanoswitches that exploit large gain modulation.
Authors
- Theng-Loo Lim
- Joshua R. Hendrickson (ORCID: https://orcid.org/0000-0002-5342-0346)
- Yaswant Vaddi
- M. Zahirul Alam (ORCID: https://orcid.org/0000-0003-4204-3781)
- Yiyu Zhou (ORCID: https://orcid.org/0000-0001-5543-9211)
- Jeremy Upham (ORCID: https://orcid.org/0000-0002-0829-8783)
- Robert W. Boyd (ORCID: https://orcid.org/0000-0002-1234-2265)
- Mohammad Karimi (ORCID: https://orcid.org/0000-0002-2923-5984)
- Shivashankar Vangala
Institutions
- United States Air Force Research Laboratory (US)
- University of Ottawa (CA)
- Instituto de Óptica "Daza de Valdés" (ES)
- Sensors (United States) (US)
- Max Planck - University of Ottawa Centre for Extreme and Quantum Photonics (CA)
- Institute of Astronomy (RU)
- University of Rochester (US)
Publication Details
- Journal
- Nano Letters
- Published
- 2026-04-17
- DOI
- https://doi.org/10.1021/acs.nanolett.5c05821
- Primary Topic
- Laser-Matter Interactions and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00