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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Issue

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

From laboratory to society: Physics in nation building
29 May-1 June 2019, Tagbilaran City

Please visit the activity webpage for SPP2019 for more information on this year's conference.

Article ID

SPP-2019-PA-39

Section

Poster Session PA

Published

2019-05-23

How to Cite

[1]

JD Vasquez, A De Los Reyes, MA Faustino, IC 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://proceedings.spp-online.org/article/view/SPP-2019-PA-39.