Quadrant uniformity calibration method for four quadrant photodetectors

Yang Xue; Lijing Li; Siyuan Wang

doi:10.1117/12.2516342

12 March 2019 Quadrant uniformity calibration method for four quadrant photodetectors

Yang Xue, Lijing Li, Siyuan Wang

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 1102304 (2019) https://doi.org/10.1117/12.2516342
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

Abstract

In laser guidance, the response uniformity of the four quadrant photodetector has an important influence on the guidance accuracy. Each quadrant photodetector needs to measure the response consistency between quadrants and be calibrated to the same response. In this paper, large area uniform laser irradiation is used to measure the inhomogeneity between detector quadrants. The gain compensation method is used to calibrate the inhomogeneity between detector quadrants. The main core of this method is that it needs to be able to modulate the intensity of the light source; the area of the light source can be modulated, and the maximum area should be able to completely cover the four photosensitive surfaces of the detector; the light source is a beam of uniform light power. In order to solve the problem that the uniform light effect is not ideal in traditional measurement methods such as spreading beam and frosted glass scattering, a beam expander and a beam homogenizer are used to realize the high uniformity of the uniform light spot. The detector is mounted on the single axis turntable and rotated around the optical axis to make the light received on the detector more uniform. This method realizes a four-quadrant detector for consistency calibration of quadrant response in the range of optical power of a certain wavelength. The method is simple, precise, stable and easy to implement.

Citation Download Citation

Yang Xue, Lijing Li, and Siyuan Wang "Quadrant uniformity calibration method for four quadrant photodetectors", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 1102304 (12 March 2019); https://doi.org/10.1117/12.2516342

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