Abstract
Short electromagnetic pulses experience significant spectral and temporal deformation when diffracted on subwavelength apertures. Temporal delay/advancement is one of the effects that occurs when a pulse passes through the aperture. In this study, it is demonstrated that the intrinsic negative chirp of terahertz pulses is the origin of the temporal advancement in the limit that the aperture is much smaller than the wavelength of the pulse. The advancement is shown to disappear for unchirped terahertz pulses. The chirp effect is general for any system where the diffracted or scattered field is wavelength dependent.
Original language | English (US) |
---|---|
Pages (from-to) | 1319-1321 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 80 |
Issue number | 8 |
DOIs | |
State | Published - Feb 25 2002 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)