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Universal ultrafast detector for short optical pulses based on graphene.
- Source :
-
Optics express [Opt Express] 2015 Nov 02; Vol. 23 (22), pp. 28728-35. - Publication Year :
- 2015
-
Abstract
- Graphene has unique optical and electronic properties that make it attractive as an active material for broadband ultrafast detection. We present here a graphene-based detector that shows 40-picosecond electrical rise time over a spectral range that spans nearly three orders of magnitude, from the visible to the far-infrared. The detector employs a large area graphene active region with interdigitated electrodes that are connected to a log-periodic antenna to improve the long-wavelength collection efficiency, and a silicon carbide substrate that is transparent throughout the visible regime. The detector exhibits a noise-equivalent power of approximately 100 µW·Hz(-½) and is characterized at wavelengths from 780 nm to 500 µm.
Details
- Language :
- English
- ISSN :
- 1094-4087
- Volume :
- 23
- Issue :
- 22
- Database :
- MEDLINE
- Journal :
- Optics express
- Publication Type :
- Academic Journal
- Accession number :
- 26561141
- Full Text :
- https://doi.org/10.1364/OE.23.028728