Calculation technique of diffuse reflectance spectra using an ensemble of damped harmonic oscillators model for substances identification

Dmitriy R. Anfimov; Igor L. Fufurin; Igor S. Golyak; Anastasiya S. Tabalina; Steﬀen Kurth

doi:10.1117/12.2555119

1 April 2020 Calculation technique of diffuse reflectance spectra using an ensemble of damped harmonic oscillators model for substances identification

Dmitriy R. Anfimov, Igor L. Fufurin, Igor S. Golyak, Anastasiya S. Tabalina, Steﬀen Kurth

Author Affiliations +

Proceedings Volume 11354, Optical Sensing and Detection VI; 1135424 (2020) https://doi.org/10.1117/12.2555119
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

We present the technique and experimental laboratory setup for measuring and analysis of diffuse reflectance spectra. The Experimental spectra obtained by tunable infrared quantum cascade laser with average power of 15 mW. Using causality relations for real and imaginary parts of reflectivity we can calculate the extinction coefficient. We use dumped harmonic oscillator (DHO) model to calculate synthetic spectra and test KramersKronig relations for spectra calculations. Using experimental setup and numerical methods of spectra analysis we could identify the diethyl phthalate (DEP). The proposed method can be used in routine laboratory analysis to complement the ATR and DRIFTS methods of IR spectroscopy.

Conference Presentation

Citation Download Citation

Dmitriy R. Anfimov, Igor L. Fufurin, Igor S. Golyak, Anastasiya S. Tabalina, and Steﬀen Kurth "Calculation technique of diffuse reflectance spectra using an ensemble of damped harmonic oscillators model for substances identification", Proc. SPIE 11354, Optical Sensing and Detection VI, 1135424 (1 April 2020); https://doi.org/10.1117/12.2555119

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