Coherent terahertz radiation detection: Direct comparison between free-space electro-optic sampling and antenna detection
Document Type
Article
Publication Date
12-1-1998
Abstract
We compare the use of free-space electro-optic sampling (FSEOS) with photoconducting antennas to detect terahertz (THz) radiation in the range of 0.1-3 THz. For the same average THz power and low-frequency modulation, signal-to-noise ratio and sensitivity are better with antenna detection at frequencies smaller than 3 THz. When the modulation frequency is increased to more than 1 MHz in FSEOS, both detection schemes have comparable performance. Using a singular-electric-field THz emitter, we demonstrate the feasibility of a THz imaging system using real-time delay scanning in FSEOS and only 20 mW of laser power. © 1998 American Institute of Physics.
Identifier
0000176866 (Scopus)
Publication Title
Applied Physics Letters
External Full Text Location
https://doi.org/10.1063/1.121894
ISSN
00036951
First Page
444
Last Page
446
Issue
4
Volume
73
Recommended Citation
Cai, Y.; Brener, I.; Lopata, J.; Wynn, J.; Pfeiffer, L.; Stark, J. B.; Wu, Q.; Zhang, X. C.; and Federici, J. F., "Coherent terahertz radiation detection: Direct comparison between free-space electro-optic sampling and antenna detection" (1998). Faculty Publications. 16265.
https://digitalcommons.njit.edu/fac_pubs/16265
