Theoretical and experimental study of a terahertz time-domain spectrometer based on photoconductive antenna

Jitao Zhang, Wei Ren Ng, Minguang Tuo, Min Liang, D. R. Golish, M. E. Gehm, Hao Xin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We construct a terahertz time-domain spectrometer (THz-TDS) system based on photoconductive antenna (PCA). A 800 nm Ti:sapphire femtosecond laser with 80 MHz repetition rate provides the pump and probe laser pulse, which has a 45 fs pulse width (as short as 15 fs is available) and as much as 400 mW power. Two commercial PCAs with 34 um and 6 um gap size are used as the emitter and receiver, respectively. We characterize this system by measuring its absolute radiated THz power, spectral bandwidth, signal-to-noise ratio (SNR) and dynamic range. Using this system, we study the response of the PCA as the emitter and receiver to the laser power and/or biased DC voltage, as well as their influences on the SNR and dynamic range of the TDS system.

Original languageEnglish (US)
Title of host publication2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479931200
DOIs
StatePublished - Oct 16 2014
Event2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014 - Boulder, United States
Duration: Jan 8 2014Jan 11 2014

Publication series

Name2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014

Other

Other2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014
CountryUnited States
CityBoulder
Period1/8/141/11/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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    Zhang, J., Ng, W. R., Tuo, M., Liang, M., Golish, D. R., Gehm, M. E., & Xin, H. (2014). Theoretical and experimental study of a terahertz time-domain spectrometer based on photoconductive antenna. In 2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014 [6927955] (2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/USNC-URSI-NRSM.2014.6927955