DOI: 10.17586/1023-5086-2018-85-03-32-37

Application of image fusion algorithm in measuring laser beam far-field divergence angle

Zhou, Xuyang, Wang, Jinsong, Liang, Xu, Liu, Jia, Xiao, Yunfeng

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Xuyang Zhou, Jinsong Wang, Xu Liang, Yunfeng Xiao, Jia Liu Application of image fusion algorithm in measuring laser beam far-field divergence angle (Применение алгоритма объединения изображений дальнего поля лазерного излучения при измерении его расходимости) [на англ. яз.] // Оптический журнал. 2018. Т. 85. № 3. С. 32–37. http://doi.org/10.17586/1023-5086-2018-85-03-32-37

Xuyang Zhou, Jinsong Wang, Xu Liang, Yunfeng Xiao, Jia Liu Application of image fusion algorithm in measuring laser beam far-field divergence angle (Применение алгоритма объединения изображений дальнего поля лазерного излучения при измерении его расходимости) [in English] // Opticheskii Zhurnal. 2018. V. 85. № 3. P. 32–37. http://doi.org/10.17586/1023-5086-2018-85-03-32-37

For citation (Journal of Optical Technology):

Xuyang Zhou, Jinsong Wang, Xu Liang, Yunfeng Xiao, and Jia Liu, "Application of an image fusion algorithm in measuring the laser beam far-field divergence angle," Journal of Optical Technology. 85(3), 148-152 (2018). https://doi.org/10.1364/JOT.85.000148

Abstract:

The measurement of laser beam far-field parameters plays an important role in the accurate assessment of the laser's transmission effect and the laser system's overall performance. A more simple and convenient detection method for image fusion algorithm of saturated and unsaturated double frames is proposed, which is based on the technology of image fusion, to measure the laser beam far-field angle. After being attenuated by the attenuating plate, the pulse laser is focused by the objective lens to form a spot image on the charge coupled device image plane. The spot size which has been attenuated by the attenuator can be calculated and analyzed by the mathematical modeling software MATLAB, and then the far-field divergence angle value is calculated. The experimental device and the working principle are introduced in detail, and the theoretical analysis of the computer data processing method is given, the date processing results are shown in the end. Experimental results indicate that the amount of computation compared with the previous image fusion algorithm is smaller, this method can be used to measure the laser beam far-field divergence angle and the calculation speed is fast, measurement accuracy can be up to 2%.

Keywords:

image fusion, detection method, far-field divergence angle, data processing

OCIS codes: 140.3295, 100.2000, 140.3538

References:

1. Li Y.J., Zu J.J., Chang B.K., Qian Y.S., and Liu L. Remote multiband infrared image fusion system and registration method // Infrared and Laser Engineering. 2016. V. 45. P. 4526002-1.
2. Li Y.X., Zhang L., Zhang H.G., and Hu L.L. Technology of high precision test for laser spot based on double CCD detection in the outfield // Infrared and Laser Engineering. 2015. V. 44. P. 59–64.
3. Shen L., Yang J.H., Han F.L., Jiang H.L., Wang C.Y., and Xie D.G. Research on laser beam divergence angle measurement method based on spot image // Acta Armamentarii. 2011. V. 32. P. 890–895.
4. Wang J.S., Yang S.J., Liu H., An Z.Y. Detection system for divergence laser beams of visible and near infrared // Sci. Technol. and Eng. 2012. V. 12. P. 1248–1250.
5. Cheng Z., Chu X.C., Zhao S.H., Deng B.Y., and Zhang X.W. Propagation characteristics in the far-field and evolution regular of Airy beam // Infrared and Laser Engineering. 2015. V. 44.P. 2906–2911.
6. Pang M. Rearch on the high-precision measuring technology for the laser beam¢s far-field parameters // Doct. School of Physical Electronics. 2015.
7. Zhang D.B., Song Y.H., Wang Q.S. Error analysis of laser divergence angle measurement // Laser Technology. 2016. V. 40. P. 926–929.
8. Liu J.M. Simple technique for measurements of pulsed Gaussian-beam spot sizes // Opt. Lett. 1982. V. 7. P. 196–198.