TY - GEN
T1 - CLEO®/Europe-EQEC 2021 Penrose wave amplification in superfluids of light
AU - Braidotti, Maria Chiara
AU - Prizia, Radivoje
AU - Wright, Ewan M.
AU - Faccio, Daniele
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - The amplification of waves in the scattering with rotating black holes is a fundamental process in gravitational physics. It was introduced by Roger Penrose in 1969 as a way to extract energy from these astrophysical objects [1]. Soon after Penrose proposal, in 1971 Zel'dovich predicted a similar superradiant amplification for electromagnetic waves scattered by a metallic rotating cylinder [2]. In Zel'dovich proposal, waves get amplified if their angular frequency ω satisfies the condition ω < m Ω, where m is the waves topological charge and Ω is the cylinder angular velocity. Despite this amplification process is ubiquitous in wave scattering physics, and not limited to electromagnetic waves and astrophysics only, direct measurements are limited to an experiment with waves in a water vortex in a draining bathtub experiment [3]. The related, but not identical, Zel'dovich amplification has been observed for acoustic waves [4].
AB - The amplification of waves in the scattering with rotating black holes is a fundamental process in gravitational physics. It was introduced by Roger Penrose in 1969 as a way to extract energy from these astrophysical objects [1]. Soon after Penrose proposal, in 1971 Zel'dovich predicted a similar superradiant amplification for electromagnetic waves scattered by a metallic rotating cylinder [2]. In Zel'dovich proposal, waves get amplified if their angular frequency ω satisfies the condition ω < m Ω, where m is the waves topological charge and Ω is the cylinder angular velocity. Despite this amplification process is ubiquitous in wave scattering physics, and not limited to electromagnetic waves and astrophysics only, direct measurements are limited to an experiment with waves in a water vortex in a draining bathtub experiment [3]. The related, but not identical, Zel'dovich amplification has been observed for acoustic waves [4].
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U2 - 10.1109/CLEO/Europe-EQEC52157.2021.9542592
DO - 10.1109/CLEO/Europe-EQEC52157.2021.9542592
M3 - Conference contribution
AN - SCOPUS:85117604903
T3 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
BT - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Y2 - 21 June 2021 through 25 June 2021
ER -