Experimental study on effect of focal length on quality of computational ghost imaging

Peng Hongtao; Yang Zhaohua; Li Dapeng; Wu Ling'an

doi:10.3788/IRLA201645.0824003

Conventional optical imaging require the image plane at the focal plane of the imaging lens group to get the maximum flux. So the focal length has great impact on imaging quality. In order to investigate the influence of focal length on quality of computational ghost imaging, the experiment of computational ghost imaging was constructed, and the probability density of the measurement of bucket detector was utilized to analyze the results of computational ghost imaging with different focal length and background light. The results show that the variation of focal length and background light have little effect on the quality of computational ghost imaging, which solve the problem that the defocus lead to the deterioration of quality caused by the inequality of two optical path in traditional ghost imaging. Computational ghost imaging can be realized without imaging lens and only using a bucket detector, thus avoiding the allocation of flux on the pixel dimension as well as improving the signal-to-noise ratio.Therefore, computational ghost imaging is very suitable for imaging detection under the extremely weak background.

Experimental study on effect of focal length on quality of computational ghost imaging

1. School of Instrument Science and Optoelectronics Engineering,Beihang University,Beijing 100191,China;

2. Laboratory of Optical Physics,Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Received Date: 2015-12-05

Rev Recd Date: 2016-01-03

Publish Date: 2016-08-25

Key words:

Abstract: Conventional optical imaging require the image plane at the focal plane of the imaging lens group to get the maximum flux. So the focal length has great impact on imaging quality. In order to investigate the influence of focal length on quality of computational ghost imaging, the experiment of computational ghost imaging was constructed, and the probability density of the measurement of bucket detector was utilized to analyze the results of computational ghost imaging with different focal length and background light. The results show that the variation of focal length and background light have little effect on the quality of computational ghost imaging, which solve the problem that the defocus lead to the deterioration of quality caused by the inequality of two optical path in traditional ghost imaging. Computational ghost imaging can be realized without imaging lens and only using a bucket detector, thus avoiding the allocation of flux on the pixel dimension as well as improving the signal-to-noise ratio.Therefore, computational ghost imaging is very suitable for imaging detection under the extremely weak background.

HTML

Reference (16)

[1]	Pittman T B,Shih Y H,Strekalov D V,et al.Optical imaging by means of two-photon quantum entanglement[J].Physical Review A,1995,52(5):R3429-3432.
[2]	Brown R H,Twiss R Q.A test of a new type of stellar interferometer on Sirius[J].Nature,1956,178(4541):1046-1048.
[3]	Bennink R S,Bentley S J,Boyd R W. Two-photon coincidence imaging with a classical source[J].Physical Review Letters,2002,89(11):113601.
[4]	Zhang M,Wei Q,Shen X,et al.Lensless Fourier-transform ghost imaging with classical incoherent light[J].Physical Review A,2007,75(2):021803.
[5]	Liu X F,Chen X H,Yao X R,et al.Lensless ghost imaging with sunlight[J].Optics Letters,2014,39(8):2314-2317.
[6]	Fan Jinxiang,Yang Jianyu.Development trends of infrared imaging detecting technology[J].Infrared and Laser Engineering,2012,41(12):3145-3153.(in Chinese)范晋祥,杨建宇.红外成像探测技术发展趋势分析[J].红外与激光工程,2012,41(12):3145-3153.
[7]	Katz O,Bromberg Y,Silberberg Y.Compressive ghost imaging[J].Applied Physics Letters,2009,95(13):131110.
[8]	Chen Tao,Li Zhengwei,Wang Jianli.Imaging system of single pixel camera based on compressed sensing[J].Opt Precision Eng,2012,20(11):2523-2530.(in Chinese)陈涛,李正炜,王建立.应用压缩感知理论的单像素相机成像系统[J].光学精密工程,2012,20(11):2523-2530.
[9]	Du Keming,Jiang Yuanda,Chen Ying,et al.Photoncounting imaging system based on compressive sensing[J].Infrared and Laser Engineering,2012,41(2):363-368.(in Chinese)杜克铭,蒋远大,陈颖,等.基于压缩传感的光子计数成像系统[J].红外与激光工程,2012,41(2):363-368.
[10]	Yu Wenkai,Yao Xuri,Liu Xuefeng,et al.Compressed sensing for ultra-weak light counting imaging[J].Opt Precision Eng,2012,20(10):2283-2292.(in Chinese)俞文凯,姚旭日,刘雪峰,等.压缩传感用于极弱光计数成像[J].光学精密工程,2012,20(10):2283-2292.
[11]	Zhu Ming,Gao Wen,Guo Liqiang.Application of compressed sensing theory in image processing[J].Chinese Journal of Optics,2011,4(5):441-447.(in Chinese)朱明,高文,郭立强.压缩感知理论在图像处理领域的应用[J].中国光学,2011,4(5):441-447.
[12]	Guo Shuxu,Zhang Chi,Cao Junsheng,et al.Object reconstruction by compressive sensing based normalized ghost imaging[J].Opt Precision Eng,2015,23(1):288-294.(in Chinese)郭树旭,张弛,曹军胜,等.基于压缩感知归一化关联成像实现目标重构[J].光学精密工程,2015,23(1):288-294.
[13]	Luo Chunling,Lin Jie,Cheng Jing.Experimental investigation on the effects of the detector size and defocusing length on lensless ghost diffraction[J].Acta Optica Sinica,2012,32(11):29-34.(in Chinese)罗春伶,林洁,程静.实验研究探测器大小与散焦长度对无透镜鬼衍射的影响[J].光学学报,2012,32(11):29-34.
[14]	Wang Sen,Li Hongguo,Zhang Dejian,et al.The influence of rotational speed of ground-glass on the quality of ghost imaging with thermal light[J].Journal of Quantum Optics,2015,21(1):9-13.(in Chinese)王森,李洪国,张德建,等.毛玻璃转速对热光鬼成像质量的影响[J].量子光学学报,2015,21(1):9-13.
[15]	Ferri F,Magatti D,Lugiato L A,et al.Differential ghost imaging[J].Physical Review Letters,2010,104(25):253603.
[16]	Russ J C.The Image Processing Handbook[M].Florida State:CRC Press,2011.

Experimental study on effect of focal length on quality of computational ghost imaging

doi: 10.3788/IRLA201645.0824003

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views