Investigation of the Christiansen effect in indium tin oxide bulk materials

M. A. Sufian; B. G. DeLacy; K. W. Goossen

doi:10.1117/12.2559996

23 April 2020 Investigation of the Christiansen effect in indium tin oxide bulk materials

M. A. Sufian, B. G. DeLacy, K. W. Goossen

Proceedings Volume 11388, Image Sensing Technologies: Materials, Devices, Systems, and Applications VII; 113880W (2020) https://doi.org/10.1117/12.2559996
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

The Christiansen Effect occurs when the refractive index (η) of a given material matches that of its surrounding medium at a particular wavelength, leading to a transmission window. When air is chosen as the medium, the Christiansen Effect is observed when the refractive index of a given material passes through η=1 at a specific wavelength (λ), thereby matching that of air, and subsequently producing a transmission at wavelength (λ). In general, materials that exhibit a refractive index of η=1 in the near infrared are of particular interest for a variety of glass optics and imaging applications. In this paper, spectroscopic ellipsometry (SE) is used to determine the complex refractive index of bulk Indium Tin Oxide (ITO) in the near Infrared (IR) and shortwave IR region. This work utilizes the SE results and optical reflectance measurements to demonstrate the utility of using bulk indium tin oxide (ITO), in combination with air, as a means of generating and tuning the Christianson Effect within the near infrared region. Colloidal suspensions of ITO particles produced from the bulk wafers were also studied to explore the Christiansen effect for obscurant applications.

Citation Download Citation

M. A. Sufian, B. G. DeLacy, and K. W. Goossen "Investigation of the Christiansen effect in indium tin oxide bulk materials", Proc. SPIE 11388, Image Sensing Technologies: Materials, Devices, Systems, and Applications VII, 113880W (23 April 2020); https://doi.org/10.1117/12.2559996

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