A new method to estimate the absorption coefficient for uncooled infrared detectors

M. Yusuf Tanrikulu; Fehmi Civitci; Tayfun Akin

doi:10.1117/12.786610

17 April 2008 A new method to estimate the absorption coefficient for uncooled infrared detectors

M. Yusuf Tanrikulu, Fehmi Civitci, Tayfun Akin

Proceedings Volume 6940, Infrared Technology and Applications XXXIV; 694027 (2008) https://doi.org/10.1117/12.786610
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

This paper introduces a new method to estimate the total absorption coefficient of uncooled infrared detectors. Current approaches in the literature model the infrared detectors as cascaded transmission lines representing the detector layers, and this model can easily be used to estimate the absorption coefficient if the detector has the same structure at every point. However, the state of the art uncooled infrared detectors do not have same structure at every point, making it not feasible to use this simple model. According to the proposed method, the detector structure is divided into subregions having different layer combinations, and the absorption coefficient of each subregion is calculated separately. Then, the area ratios of the subregions together with these coefficients are used in order to calculate the total absorption coefficient of the detector. As the estimation of the absorption coefficient for complex detector structures can easily be done, the absorption in the required part of the infrared spectrum can be optimized by adjusting the layer properties and layer thicknesses. This approach can be used both for single and double layer uncooled infrared detector structures.

Citation Download Citation

M. Yusuf Tanrikulu, Fehmi Civitci, and Tayfun Akin "A new method to estimate the absorption coefficient for uncooled infrared detectors", Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 694027 (17 April 2008); https://doi.org/10.1117/12.786610

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