We present the results of hybrid photoconductive antenna THz emission enhanced by silver nanoantenna arrays. By varying the size of nanoantennas and the distance between them, we obtain the greatest value of optical-to-THz conversion efficiency reached so far. The results of experimental investigations are in a good agreement with numerical simulations. The conversion efficiency reveals over 5-fold improvement at certain frequencies, if compared with similar photoconductive antenna without silver nanoparticles, while previous results for this type of antenna barely exceeded 2-fold conversion efficiency gain.
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Funding: Russian Foundation for Basic Research (Projects 16-07-01166 a, and 16-
- Experimental investigations
- Nanoantenna arrays
- Photoconductive antennas
- Silver nanoparticles
- Terahertz emissions
- THz emission