激光空间相干性对照明均匀性影响的实验研究

基金项目:

国家高技术激光技术青年科学基金资助课题;中国工程物理研究院基金资助项目

详细信息

Experimental study of the influence of laser spatial coherenceon illumination uniformity

摘要: 对激光束空间相干性对照明均匀性的影响进行了实验研究。实验结果表明,激光束的空间相干性与照明均匀性具有密切的关系,当激光束空间相干性降低时,目标上照明光斑的闪烁率和功率谱密度也下降,激光照明的均匀性得到提高。所得结果对实际工作中照明激光器的选择是有用的。
- 照明均匀性 /
- 照明激光 /
- 空间相干性 /
- 闪烁率 /
- 功率谱密度
Abstract: The experimental study of the influence of laser spatial coherence on illumination uniformity is made.It is shown that the coherence property of laser affects the illumination uniformity.The scintillation index and the power spectral density of the illumination spot on the target decrease with decreasing spatial coherence of laser beams.As a result,the illumination uniformity can be improved.The experimental results obtained in this paper are useful for appropriately choosing the laser illuminator in practice.
- illumination uniformity /
- laser illuminator /
- spatial coherence /
- scintillation index /
- power spectral density

[1]	张逸新,迟泽英.光波在大气中的传输与成像.北京:国防工业出版社,1997.
[1]	Andrews L C,Phillips R L.Laser beam propagation through random media.Washington:SPIE Optical Engineering Press,1998.
[2]	Andrews L C,Phillips R L,Hopen C Y et al.J O S A,1999,A16(1):1417～1429.
[3]	Higgs C.SPIE,1998,3381:13～21.
[4]	Higgs C,Barclay H,Kansky J.SPIE,1998,3381:244～254.
[5]	Billman K W,Horwitz B A,Shattuck P L.SPIE,1999,3706:196～203.
[6]	Higgs C,Barclay H T.SPIE,1999,3706:206～215.
[7]	Mandel L,Wolf E.Optical coherence and quantum optics.London:Cambridge University Press,1995.
[8]	Proakis J G著.张力军,张宗橙,郑宝玉 et al译.数字通信.3版,北京:电子工业出版社,2001.
[9]	Welch P D.IEEE Trans Audio Electroacoust,1967,AU-15:70～73.