TY - JOUR
T1 - Coherence imaging for laser detection
AU - Benton, David
AU - Sugden, Kate
AU - Zandi, Marie
N1 - Copyright 2020 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
PY - 2020/9/20
Y1 - 2020/9/20
N2 - The detection of lasers by means of coherence detection often uses interferometry in a one-dimensional manner such as with a Mach Zehnder interferometer. We are taking a two dimensional approach making use of a spatial light modulator and a camera to examine the results of binary holography in differentiating coherent and incoherent incoming light. A DMD micromirror array focusing light onto a CCD camera is presented as a method for determining the presence of coherent light, its wavelength and angle of arrival. We discuss the use of Zernike modes to overcome the aberrations inherent in the DMD device, thereby improving the focussing quality and improving the precision of wavelength determination.
AB - The detection of lasers by means of coherence detection often uses interferometry in a one-dimensional manner such as with a Mach Zehnder interferometer. We are taking a two dimensional approach making use of a spatial light modulator and a camera to examine the results of binary holography in differentiating coherent and incoherent incoming light. A DMD micromirror array focusing light onto a CCD camera is presented as a method for determining the presence of coherent light, its wavelength and angle of arrival. We discuss the use of Zernike modes to overcome the aberrations inherent in the DMD device, thereby improving the focussing quality and improving the precision of wavelength determination.
UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11537/2573194/Coherence-imaging-for-laser-detection/10.1117/12.2573194.short?SSO=1
UR - http://www.scopus.com/inward/record.url?scp=85093700752&partnerID=8YFLogxK
U2 - 10.1117/12.2573194
DO - 10.1117/12.2573194
M3 - Conference article
SN - 0277-786X
VL - 11537
JO - Proceedings of SPIE - International Society for Optical Engineering
JF - Proceedings of SPIE - International Society for Optical Engineering
M1 - 115370K
T2 - SPIE Security + Defence, 2020
Y2 - 21 September 2020 through 25 September 2020
ER -