4 ms·

Full paper is here https://europepmc.org/article/ppr/ppr485152 https://europepmc.org/article/ppr/ppr485152

sitkack 4y ago
https://web.archive.org/web/20220421175228/https://assets.researchsquare.com/files/rs-1572967/v1_covered.pdf https://web.archive.org/web/20220421175228/https://assets.re...
- westurner 4y ago
  "Coherent Surface Plasmon Polariton Amplification via Free Electron Pumping" (2022) Ye Tian, Dongdong Zhang, Yushan Zeng, Yafeng Bai, Zhongpeng Li, and 1 more https://doi.org/10.21203/rs.3.rs-1572967/v1 https://doi.org/10.21203/rs.3.rs-1572967/v1 > Abstract: Surface plasmonic with its unique confinement of light is expected to be a cornerstone for future compact radiation sources and integrated photonics devices. The energy transfer between light and matter is a defining aspect that underlies recent studies on optical surface-wave-mediated spontaneous emissions. But coherent stimulated emission, being omnipresent in every laser system, remains to be realized and revealed in the optical near fields unambiguously and dynamically. Here, we present the coherent amplification of Terahertz surface plasmon polaritons via free electron stimulated emission. We demonstrate the evolutionary amplification process with a frequency redshift and lasts over 1-mm interaction length. The complementary theoretical analysis predicts a 100-order surface wave growth when a properly phase-matched electron bunch is used, which lays the ground for a stimulated surface wave light source and may facilitate capable means for matter manipulation, especially in the Terahertz band. Polariton: https://en.wikipedia.org/wiki/Polariton https://en.wikipedia.org/wiki/Polariton Surface plasmon polaritons : https://en.wikipedia.org/wiki/Surface_plasmon_polaritons https://en.wikipedia.org/wiki/Surface_plasmon_polaritons : > [...] Application of SPPs enables subwavelength optics in microscopy and photolithography beyond the diffraction limit. It also enables the first steady-state micro-mechanical measurement of a fundamental property of light itself: the momentum of a photon in a dielectric medium. Other applications are photonic data storage, light generation, and bio-photonics.[2][3][4][5]
  - westurner 4y ago
    Near-infrared window in biological tissue: https://en.wikipedia.org/wiki/Near-infrared_window_in_biological_tissue https://en.wikipedia.org/wiki/Near-infrared_window_in_biolog... NIRS Near-infrared spectroscopy > Applications: https://en.wikipedia.org/wiki/Near-infrared_spectroscopy#Applications https://en.wikipedia.org/wiki/Near-infrared_spectroscopy#App...
  - sitkack 4y ago
    This looks ripe for some cutting edge table-top physics!
    - westurner 4y ago
      - Live ~fMRI in surgery (OpenWater,) #TricorderXPrize - Atomic antenna that listens on all frequencies; with bus and disk throughput as the new limits (Rydberg Technologies) - Nonlocal entanglement, laser-induced coherence, QKD, passive backscatter wireless, Exciting work!

https://web.archive.org/web/20220421175228/https://assets.researchsquare.com/files/rs-1572967/v1_covered.pdf https://web.archive.org/web/20220421175228/https://assets.re...

westurner 4y ago
"Coherent Surface Plasmon Polariton Amplification via Free Electron Pumping" (2022) Ye Tian, Dongdong Zhang, Yushan Zeng, Yafeng Bai, Zhongpeng Li, and 1 more https://doi.org/10.21203/rs.3.rs-1572967/v1 https://doi.org/10.21203/rs.3.rs-1572967/v1 > Abstract: Surface plasmonic with its unique confinement of light is expected to be a cornerstone for future compact radiation sources and integrated photonics devices. The energy transfer between light and matter is a defining aspect that underlies recent studies on optical surface-wave-mediated spontaneous emissions. But coherent stimulated emission, being omnipresent in every laser system, remains to be realized and revealed in the optical near fields unambiguously and dynamically. Here, we present the coherent amplification of Terahertz surface plasmon polaritons via free electron stimulated emission. We demonstrate the evolutionary amplification process with a frequency redshift and lasts over 1-mm interaction length. The complementary theoretical analysis predicts a 100-order surface wave growth when a properly phase-matched electron bunch is used, which lays the ground for a stimulated surface wave light source and may facilitate capable means for matter manipulation, especially in the Terahertz band. Polariton: https://en.wikipedia.org/wiki/Polariton https://en.wikipedia.org/wiki/Polariton Surface plasmon polaritons : https://en.wikipedia.org/wiki/Surface_plasmon_polaritons https://en.wikipedia.org/wiki/Surface_plasmon_polaritons : > [...] Application of SPPs enables subwavelength optics in microscopy and photolithography beyond the diffraction limit. It also enables the first steady-state micro-mechanical measurement of a fundamental property of light itself: the momentum of a photon in a dielectric medium. Other applications are photonic data storage, light generation, and bio-photonics.[2][3][4][5]
- westurner 4y ago
  Near-infrared window in biological tissue: https://en.wikipedia.org/wiki/Near-infrared_window_in_biological_tissue https://en.wikipedia.org/wiki/Near-infrared_window_in_biolog... NIRS Near-infrared spectroscopy > Applications: https://en.wikipedia.org/wiki/Near-infrared_spectroscopy#Applications https://en.wikipedia.org/wiki/Near-infrared_spectroscopy#App...
- sitkack 4y ago
  This looks ripe for some cutting edge table-top physics!
  - westurner 4y ago
    - Live ~fMRI in surgery (OpenWater,) #TricorderXPrize - Atomic antenna that listens on all frequencies; with bus and disk throughput as the new limits (Rydberg Technologies) - Nonlocal entanglement, laser-induced coherence, QKD, passive backscatter wireless, Exciting work!