Development of a terahertz time-domain spectroscopy setup based on a 1550 nm femtosecond fiber laser

  • John Daniel Vasquez Materials Science and Engineering Program, University of the Philippines Diliman
  • Alexander De Los Reyes National Institute of Physics, University of the Philippines Diliman
  • Maria Angela Faustino Materials Science and Engineering Program, University of the Philippines Diliman
  • Ivan Cedrick Verona National Institute of Physics, University of the Philippines Diliman
  • Hannah Bardolaza Materials Science and Engineering Program, University of the Philippines Diliman
  • Armando Somintac National Institute of Physics, University of the Philippines Diliman
  • Arnel Salvador National Institute of Physics, University of the Philippines Diliman
  • Elmer Estacio National Institute of Physics, University of the Philippines Diliman

Abstract

We report on the design, construction, and development of a 1550 nm femtosecond fiber laser-based terahertz time-domain spectroscopy (THz-TDS) setup. A p-InAs (100) bare semiconductor wafer was used as the emitter and a low-temperature-grown(LTG)-InGaAs bow tie photoconductive antenna (PCA) was used as detector. The measured THz emission from p-InAs has peak-to-peak amplitude of 116 pA, pulse width of 2 ps, bandwidth of 2 THz, and signal-to-noise ratio of 3 orders of magnitude.

About the Speaker

We report on the design, construction, and development of a 1550 nm femtosecond fiber laser-based
terahertz time-domain spectroscopy (THz-TDS) setup. A p-InAs bare semiconductor wafer was used
as the emitter and a low-temperature-grown(LTG)-InGaAs bow tie photoconductive antenna (PCA)
was used as detector. The measured THz emission from p-InAs has peak-to-peak amplitude of 116
uA, pulse width of 2 ps, bandwidth of 2 THz, and signal-to-noise ratio of 3 orders of magnitude.

Published
2019-05-23
How to Cite
[1]
J. D. Vasquez, A. De Los Reyes, M. A. Faustino, I. C. Verona, H. Bardolaza, A. Somintac, A. Salvador, and E. Estacio. Development of a terahertz time-domain spectroscopy setup based on a 1550 nm femtosecond fiber laser, Proceedings of the Samahang Pisika ng Pilipinas 37, SPP-2019-PA-39 (2019). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2019-PA-39.