The method for predicting laser interference image in infrared detection system

Qian Zhao; Ming-hao Wang; Jian-hua Li; Chen-xin Sun; Yi-zhong Fang

doi:10.1117/12.2607063

24 November 2021 The method for predicting laser interference image in infrared detection system

Qian Zhao, Ming-hao Wang, Jian-hua Li, Chen-xin Sun, Yi-zhong Fang

Proceedings Volume 12061, AOPC 2021: Infrared Device and Infrared Technology; 120611S (2021) https://doi.org/10.1117/12.2607063
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

To achieve an accurate evaluation of the effect of laser interference, this paper studies on the image simulation model of laser interference infrared detectors. According to different interference densities, the characteristics of the laser interference detector spots are investigated. First, based on the laser interference transmission link, a simulation model of the gray response of the detector image and the laser interference power is established. Then, a set of NEFD measurement methods for infrared detector response models are established based on the response characteristics of the detector. Finally, according to the different NEFD values at the entrance pupil optical system, theoretically simulation is carried on the relationship between the laser interference effect and the power density irradiated to the entrance pupil surface of the optical system. The results show that when the irradiance density at the entrance of the pupil optical system exceeds 1*10⁶ of the NEFD value, the point target can be effectively interfered. Further, when the irradiance density at the entrance of the pupil optical system exceeds 1*10⁷ of the NEFD value, the area target can be effectively interfered. The proposed model is verified by the ground test as the ground test results have the same trend and magnitude as the simulation results.

Citation Download Citation

Qian Zhao, Ming-hao Wang, Jian-hua Li, Chen-xin Sun, and Yi-zhong Fang "The method for predicting laser interference image in infrared detection system", Proc. SPIE 12061, AOPC 2021: Infrared Device and Infrared Technology, 120611S (24 November 2021); https://doi.org/10.1117/12.2607063

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