تقرير
Ultrafocused Electromagnetic Field Pulses with a Hollow Cylindrical Waveguide
| العنوان: | Ultrafocused Electromagnetic Field Pulses with a Hollow Cylindrical Waveguide |
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| المؤلفون: | Maurer, P., Prat-Camps, J., Cirac, J. I., Hänsch, T. W., Romero-Isart, O. |
| المصدر: | Phys. Rev. Lett. 119, 043904 (2017) |
| سنة النشر: | 2017 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Classical Physics |
| الوصف: | We theoretically show that an externally driven dipole placed inside a cylindrical hollow waveguide can generate a train of ultrashort and ultrafocused 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 re-focused at some particular instances of time. A dipole driven by a pulse with a lower-bounded temporal width can thus generate, in principle, a finite train of arbitrarily short and focused electromagnetic pulses. We numerically show that such ultrafocused pulses persist outside the cylindrical waveguide at distances comparable to its radius. Comment: 5+2 pages, 3 figures. Videos in SM can be provided via e-mail |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.119.043904 |
| URL الوصول: | http://arxiv.org/abs/1705.03231 |
| رقم الأكسشن: | edsarx.1705.03231 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.119.043904 |
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