PhysRevLett.119.043904.pdf (1.01 MB)
Ultrafocused electromagnetic field pulses with a hollow cylindrical waveguide
journal contribution
posted on 2023-06-09, 13:01 authored by P Maurer, J Prat-Camps, J I Cirac, T W Hänsch, O Romero-IsartWe theoretically show that a dipole externally driven by a pulse with a lower-bounded temporal width, and placed inside a cylindrical hollow waveguide, can generate a train of arbitrarily short and focused electromagnetic pulses. The waveguide encloses vacuum with perfect electric conducting walls. A dipole driven by a single short pulse, which is properly engineered to exploit the linear spectral filtering of the cylindrical hollow waveguide, excites longitudinal waveguide modes that are coherently refocused at some particular instances of time, thereby producing arbitrarily short and focused electromagnetic pulses. We numerically show that such ultrafocused pulses persist outside the cylindrical waveguide at distances comparable to its radius.
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Physical Review LettersISSN
0031-9007Publisher
American Physical SocietyExternal DOI
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043904Volume
119Department affiliated with
- Informatics Publications
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- Yes
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- Yes
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2018-04-24First Open Access (FOA) Date
2018-04-24First Compliant Deposit (FCD) Date
2018-04-24Usage metrics
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