Extraction of optical parameters of composite materials for real-world THz application

Khushboo Singh; Aparajita Bandyopadhyay; Amartya Sengupta

doi:10.1117/12.2583045

5 March 2021 Extraction of optical parameters of composite materials for real-world THz application

Khushboo Singh, Aparajita Bandyopadhyay, Amartya Sengupta

Proceedings Volume 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV; 116851H (2021) https://doi.org/10.1117/12.2583045
Event: SPIE OPTO, 2021, Online Only

Abstract

Terahertz time-domain spectroscopy has emerged as a competent technique for real-world applications such as quality control in pharmaceutical and food industry, biomedical and precision-agriculture. However, investigating the optical response of the practical composite samples such as pharmaceutical tablets, biological composites and nano-composites using Terahertz (THz) time-domain spectroscopy (TDS) is quite challenging. In the present work, we have prepared two series of binary composites, with different volume fraction of constituent materials. These composites were probed using pulsed THz TDS and their dielectric response was modeled using the effective medium theory (EMT). Based on the volume fraction of the constituent material, three EMT models, including Maxwell-Garnet (MG), Polder-van-Santen (PvS) and Landau-Lifshitz-Looyenga (LLL), were compared empirically with the conventional analysis at different frequencies; and the accuracy and ambiguity of the extracted parameters using these quasi-static models were determined. Hence, the feasibility study of these theoretical models was discussed to assess their practicality.

Conference Presentation

Citation Download Citation

Khushboo Singh, Aparajita Bandyopadhyay, and Amartya Sengupta "Extraction of optical parameters of composite materials for real-world THz application", Proc. SPIE 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV, 116851H (5 March 2021); https://doi.org/10.1117/12.2583045

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available