Influence of incident angles on echo intensity distribution of cat's eye photoelectric systems

TENG Yuan; HE Ting; ZUO Shuai

doi:10.7510/jgjs.issn.1001-3806.2015.06.030

In order to study effect of incident angles on echo intensity distribution of a cat's eye photoelectric system, the model of intensity distribution of Gaussian beam passing through the cat's eye photoelectric system was built on the basis of generalized diffraction integral formula and the analytical expressions of transmission were deduced. The intensity distribution varying with the incident angle at two detection distances was simulated numerically. The results show that in the range of half the field of view of a cat's eye photoelectric system, when incident beam is Gaussian beam, the power of echo light beam becomes smaller with the increase of detection distance and incident angle and the distribution mode is close to Gaussian mode. Compared with the short distance detection, echo intensity distribution of the long distance detection which reaches the Gaussian mode has more stringent demands for incidence condition. This study provides theoretical basis for actual detection and has particular significance for selection of incidence angles.

Influence of incident angles on echo intensity distribution of cat's eye photoelectric systems

1. State Key Laboratory of Solid Laser Technology, North China Institute of Electronics, Beijing 100015, China

Received Date: 2014-12-09

Accepted Date: 2015-01-13

Available Online: 2015-11-25

Abstract: In order to study effect of incident angles on echo intensity distribution of a cat's eye photoelectric system, the model of intensity distribution of Gaussian beam passing through the cat's eye photoelectric system was built on the basis of generalized diffraction integral formula and the analytical expressions of transmission were deduced. The intensity distribution varying with the incident angle at two detection distances was simulated numerically. The results show that in the range of half the field of view of a cat's eye photoelectric system, when incident beam is Gaussian beam, the power of echo light beam becomes smaller with the increase of detection distance and incident angle and the distribution mode is close to Gaussian mode. Compared with the short distance detection, echo intensity distribution of the long distance detection which reaches the Gaussian mode has more stringent demands for incidence condition. This study provides theoretical basis for actual detection and has particular significance for selection of incidence angles.

HTML

Reference (15)

[1]	MIEREMET A L, SCHLEIJPEN R M A, POUCHELLE P N. Modeling the detection of optical sights using retro-reflection [J]. Proceedings of the SPIE, 2008, 6950: E1-E10.
[2]	REN X M, LI L. Recognizing cat-eye targets with dual criterions of shape and modulation frequency[J]. Chinese Optics Letters, 2011, 9(4):041101.
[3]	ZHAO Y Zh, SUN H Y, ZHENG Y H. An approximate analytical propagation for formula Gaussian beams through a cat-eye optical lens under large incidence angle condition [J]. Chinese Physics Letters, 2011, 28(7):074101.
[4]	ZHAO Y Zh, SUN H Y, SONG F H, et al. Double-distance propagation of Gaussian beams passing through a tilted cat-eye optical lens in a turbulent atmosphere [J]. Chinese Physics, 2011, B20(4): 0442011.
[5]	ZHAO Y Zh, SUN H Y, ZHENG Y H. Backwards propagation characteristics of distorted reflected beams with cat-eye effect[J]. Chinese Journal of Lasers, 2011, 38(7): 0702015.
[6]	ZHANG J Y, XU Q F, LU X Q. Propagation properties of Gaussian beams through the anamorphic fractional Fourier transform system with an eccentric circular aperture[J]. Optik, 2011, 122(4):277-280.
[7]	DU W, ZHAO Ch L, CAI Y J. Propagation of Lorentz and Lorentz-Gauss beams trough an aperture fractional Fourier transform optical system[J]. Optics and Lasers in Engineering, 2011, 49(1):25-31(in Chinese).
[8]	ZHAO Y Zh, SUN H Y, SONG F H, et al. The mechanism research on reflection characteristics of laser irradiation on cat eye optical lens[J]. Acta Physica Sinica, 2008, 57(4): 2284-2293(in Chinese).
[9]	QIAO Y A. Research on the technology of active laser detection[J]. Electro-Optic Technology Application, 2005, 20(3): 22-24(in Chinese).
[10]	WEN J J. A diffraction beam field expressed as the superposition of Gaussian beams [J]. Journal of the Optical Society of America, 1988, 83(5):1752-1756.
[11]	LECOCQ C, DESHORS G, LADO-BORDOWSKY O, et al. Sight laser detection modeling [J]. Proceedings of the SPIE, 2003,5086: 280-286.
[12]	ZHAO Y Zh, SONG F H, SUN H Y. Laser reflection characteristics of cat eye effect of cassegrain lens[J]. Chinese Journal of Lasers, 2008, 35(8): 1149-1155(in Chinese).
[13]	ZHAO Y Zh, SUN H Y, SONG F H. Effect of the angle of incidence on reflected characteristics of cat eye effect[J]. High Power Laser and Particle Beams, 2007, 19(3): 364-368(in Chinese).
[14]	LI X D, MI J J, RU ZH B, et al. Cat's-eye effect based on active laser detection[J]. Journal of Applied Optics, 2014, 35(2):342-347.
[15]	ZHAO Y Zh, SUN H Y, SONG F H, et al. Effect of focal shift on reflecting character of cat eye effect [J]. Laser Technology, 2008, 32(1): 71-74(in Chinese).

Influence of incident angles on echo intensity distribution of cat's eye photoelectric systems

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views