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Experimental observation of frequency up-conversion by flash ionization
- Source :
- Applied Physics Letters. 101:161118
- Publication Year :
- 2012
- Publisher :
- AIP Publishing, 2012.
-
Abstract
- We have demonstrated frequency up-conversion in the terahertz (THz) region by flash ionization, which occurs due a terahertz wave interacting with a plasma created by an ultrashort laser pulse. The upshift frequency is controlled by the plasma density. We performed a proof-of-principle experiment with a plasma creation time scale much shorter than the period of the electromagnetic wave and a plasma length longer than its wavelength. We upshifted the frequency from 0.35 to 3.5 THz by irradiating a ZnSe crystal with a Ti:sapphire laser pulse.
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 101
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........1f5fe24e5fc19ff5b242f246932f83c9
- Full Text :
- https://doi.org/10.1063/1.4755843