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

Publication ,  Conference
Zhang, J; Ng, WR; Tuo, M; Liang, M; Golish, DR; Gehm, ME; Xin, H
Published in: 2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014
October 16, 2014

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.

Duke Scholars

Published In

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

DOI

Publication Date

October 16, 2014
 

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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. https://doi.org/10.1109/USNC-URSI-NRSM.2014.6927955
Zhang, J., W. R. Ng, M. Tuo, M. Liang, D. R. Golish, M. E. Gehm, and H. Xin. “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, 2014. https://doi.org/10.1109/USNC-URSI-NRSM.2014.6927955.
Zhang J, Ng WR, Tuo M, Liang M, Golish DR, Gehm ME, et al. 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. 2014.
Zhang, J., et al. “Theoretical and experimental study of a terahertz time-domain spectrometer based on photoconductive antenna.” 2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014, 2014. Scopus, doi:10.1109/USNC-URSI-NRSM.2014.6927955.
Zhang J, Ng WR, Tuo M, Liang M, Golish DR, Gehm ME, Xin H. Theoretical and experimental study of a terahertz time-domain spectrometer based on photoconductive antenna. 2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014. 2014.

Published In

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

DOI

Publication Date

October 16, 2014