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

Authors

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

John Daniel Vasquez, Materials Science and Engineering Program, University of the Philippines Diliman

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.

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Published

2019-05-23

Issue

2019: Proceedings of the 37th Samahang Pisika ng Pilipinas Physics Conference

Section

Poster Session PA

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How to Cite

[1]

“Development of a terahertz time-domain spectroscopy setup based on a 1550 nm femtosecond fiber laser”, Proc. SPP, vol. 37, no. 1, p. SPP-2019-PA-39, May 2019, Accessed: Apr. 13, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2019-PA-39