Terahertz range complex refractive index determinations for liquids using ATR

Adrian Dobroiu; Petre Cătălin Logofătu

doi:10.1117/12.2072174

20 February 2015 Terahertz range complex refractive index determinations for liquids using ATR

Proceedings Volume 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII; 925818 (2015) https://doi.org/10.1117/12.2072174
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies 2014, 2014, Constanta, Romania

Abstract

In this paper we discuss a study and application of the optical properties of liquids in the terahertz range and a possible technique for identifying liquids. The optical properties are the reflection and transmission of the radiation at various interfaces between known media and between a known medium and the unknown medium and the complex refractive index which is to be determined from measurements of the change in radiation signal after multiple optical interactions inside a silicon prism. For this purpose we use an attenuated total reflection experimental arrangement. We show that one can identify liquids placed on the top of the prism turned upside down using this method. Terahertz waves are especially useful in this context because they allow the determination of the liquid content of containers that are difficult to open or that simply cannot be opened, such as luggage in airports. Some explosives are liquids and the identification of the liquids using terahertz waves may help detecting hidden explosives.

Citation Download Citation

Adrian Dobroiu and Petre Cătălin Logofătu "Terahertz range complex refractive index determinations for liquids using ATR", Proc. SPIE 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII, 925818 (20 February 2015); https://doi.org/10.1117/12.2072174

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