Experimental demonstration of a Michelson interferometer involving far-infrared broadband ultrashort light pulses

Authors

Joaquin Tuanquin ⋅ PH National Institute of Physics, University of the Philippines Diliman
Hannah R. Bardolaza ⋅ PH National Institute of Physics, University of the Philippines Diliman
Nathaniel P. Hermosa II ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel A. Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Ivan Cedrick M. Verona ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer S. Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Standard Michelson interferometers generally make use of narrowband, continuous-wave light as their longer coherence lengths make interference easier to ascertain. In contrast, for broadband, pulsed light, whose coherence lengths lie in the micrometer range, proving interference is a greater challenge. Using terahertz time-domain spectroscopy, this paper experimentally demonstrates interference for far-infrared, broadband (50–1000 GHz), ultrashort (~50 ps) light pulses with, at most, a 6.66̅ % error based on calculations and the central frequency.

Standard Michelson interferometers generally make use of narrowband, continuous-wave light as their longer coherence lengths make interference easier to ascertain. In contrast, for broadband, pulsed light, whose coherence lengths lie in the micrometer range, proving interference is a greater challenge. Using terahertz time-domain spectroscopy, this paper experimentally demonstrates interference for far-infrared, broadband (50-1000 GHz), ultrashort (∼50ps) light pulses with, at most, a 6.66% error based on calculations and the central frequency.

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Issue

2024: Proceedings of the 42nd Samahang Pisika ng Pilipinas Physics Conference

Brewing waves of innovation and discovery in Physics
3-6 July 2024, Batangas State University, Pablo Borbon Campus

Please visit the SPP2024 activity webpage for more information on this year's Physics Congress.

Article ID

SPP-2024-PD-22

Section

Poster Session D (Photonics and Instrumentation Physics)

Published

2024-06-28

How to Cite

[1]

J Tuanquin, HR Bardolaza, NP Hermosa, AA Salvador, ICM Verona, and ES Estacio, Experimental demonstration of a Michelson interferometer involving far-infrared broadband ultrashort light pulses, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-PD-22 (2024). URL: https://proceedings.spp-online.org/article/view/SPP-2024-PD-22.