随机电磁光束的广义斯托克斯参数实验测量
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摘要
利用杨氏双缝和马赫曾德干涉提出一种检测随机电磁光束的广义斯托克斯参数的实验方法.部分相干光通过杨氏双缝后,用光阑、半波片和偏振片组成的马赫曾德干涉光路进行处理,检测干涉条纹的相干度和单个缝的光场强度,得到光束的交叉谱密度矩阵,进而得到光束的广义斯托克斯参数.实验结果表明,同方向偏振的光分量的空间相干度高于正交偏振方向的光分量.该方法可用于研究光束传播过程中的偏振特性和相干特性的变化.
Utilizing the Young′s double slits and Mach-Zehnder interferometer,a experimental method was proposed to measure the generalized Stokes parameters of a random electromagnetic beam.After propagating through the Young′s double slits,the partially coherent beam was processed by a Mach–Zehnder interferometer consisting of apertures,quarter-wave plates and polarizers.The electric crossspectral density matrix was obtained by detecting the coherence degree of interference fringe and the density of each single slit,so that the generalized Stokes parameters could be obtained.The experiment result shows that the spectral degree of coherence for copolarized cases is higher than that for crosspolaried cases.This method will help us determine the change of the polarization and coherence of the light in propagation by detecting the change of the generalized Stokes parameters.
Utilizing the Young′s double slits and Mach-Zehnder interferometer,a experimental method was proposed to measure the generalized Stokes parameters of a random electromagnetic beam.After propagating through the Young′s double slits,the partially coherent beam was processed by a Mach–Zehnder interferometer consisting of apertures,quarter-wave plates and polarizers.The electric crossspectral density matrix was obtained by detecting the coherence degree of interference fringe and the density of each single slit,so that the generalized Stokes parameters could be obtained.The experiment result shows that the spectral degree of coherence for copolarized cases is higher than that for crosspolaried cases.This method will help us determine the change of the polarization and coherence of the light in propagation by detecting the change of the generalized Stokes parameters.
引文
[1]WOLF E,Unified theory of coherence and polarization of random electromagnetic beams[J].Physics Letters A,2003,312(5):263-267.
[2]WOLF E,Correlation-induced changes in the degree of polarization,the degree of coherence,and the spectrum of random electromagnetic beams on propagation[J].Optics Letters,2003,28(13):1078-1080.
[3]JAMES D F V,KANDPAL H C,WOLF E,A new method for determining the angular separation of double stars[J].The Astrophysical Journal,1994,445(1):406-410.
[4]AGRAWAL G P,WOLF E,Propagation-induced polarization changes impartially coherent optical beams[J].Optical Society of America A,2009,17(11):2019.
[5]GORI F,SANTARSIERO M,Twisted Gaussian Schell-model beams as series of partially coherent modified Bessel–Gauss beams[J].Optics Letters,2015,40(7):1587-1590.
[6]WOLF E,Introduction to theory of coherence and polarization of light[M].Britain:Cambridge University Press,2007.
[7]ROYCHOWDLHURY H,WOLF E,Determination of the electric cross-spectral density matrix of a random electromagnetic beam[J].Optics Communications,2003,226(1-6):57-60.
[8]KOROTKOVA O;WOLF E,Generalized Stokes parameters of random electromagnetic beams[J].Optics Letters,2005,30(2):198-200.
[9]KANSERI B,KAMDPAL H C,Experimental determination of electric cross-spectral density matrix and generalized Stokes parameters for a laser beam[J].Optics Letters,2008,33(20):2410-2412.
[10]DU Xin-yue,ZHAO,Dao-mu,Changes in generalized Stokes parameters of stochastic electromagnetic beams on propagation through ABCD optical systems and in the turbulent atmosphere[J].Optics Communications,2008,281(24):5968-5972.
[11]KANSERI B,RATH S,KANDPAL H C,Direct determination of the generalized Stokes Parameters from the usual Stokes parameters[J].Optics Letters,2009,34:719-721.
[12]MEI Zhang-rong,Generalized stokes parameters of threedimensional stochastic electromagnetic beams[J].Optics Express,2010,18(22):22826-22832.
[13]LI J,DING C.Generalized stokes parameters of random electromagnetic vortex beams propagating through atmospheric turbulence[J].Applied Physics,2011,103(1):245-255.
[14]SZTUL H I,ALFANO R R,Double-slit interference with Laguerre-Gaussian beams[J].Optics Letters,2006,31(7):999-1001.
[15]MANDEL L,WOLF E.Optical coherence and quantum optics[M].Britain:Cambridge University Press,1995.
[2]WOLF E,Correlation-induced changes in the degree of polarization,the degree of coherence,and the spectrum of random electromagnetic beams on propagation[J].Optics Letters,2003,28(13):1078-1080.
[3]JAMES D F V,KANDPAL H C,WOLF E,A new method for determining the angular separation of double stars[J].The Astrophysical Journal,1994,445(1):406-410.
[4]AGRAWAL G P,WOLF E,Propagation-induced polarization changes impartially coherent optical beams[J].Optical Society of America A,2009,17(11):2019.
[5]GORI F,SANTARSIERO M,Twisted Gaussian Schell-model beams as series of partially coherent modified Bessel–Gauss beams[J].Optics Letters,2015,40(7):1587-1590.
[6]WOLF E,Introduction to theory of coherence and polarization of light[M].Britain:Cambridge University Press,2007.
[7]ROYCHOWDLHURY H,WOLF E,Determination of the electric cross-spectral density matrix of a random electromagnetic beam[J].Optics Communications,2003,226(1-6):57-60.
[8]KOROTKOVA O;WOLF E,Generalized Stokes parameters of random electromagnetic beams[J].Optics Letters,2005,30(2):198-200.
[9]KANSERI B,KAMDPAL H C,Experimental determination of electric cross-spectral density matrix and generalized Stokes parameters for a laser beam[J].Optics Letters,2008,33(20):2410-2412.
[10]DU Xin-yue,ZHAO,Dao-mu,Changes in generalized Stokes parameters of stochastic electromagnetic beams on propagation through ABCD optical systems and in the turbulent atmosphere[J].Optics Communications,2008,281(24):5968-5972.
[11]KANSERI B,RATH S,KANDPAL H C,Direct determination of the generalized Stokes Parameters from the usual Stokes parameters[J].Optics Letters,2009,34:719-721.
[12]MEI Zhang-rong,Generalized stokes parameters of threedimensional stochastic electromagnetic beams[J].Optics Express,2010,18(22):22826-22832.
[13]LI J,DING C.Generalized stokes parameters of random electromagnetic vortex beams propagating through atmospheric turbulence[J].Applied Physics,2011,103(1):245-255.
[14]SZTUL H I,ALFANO R R,Double-slit interference with Laguerre-Gaussian beams[J].Optics Letters,2006,31(7):999-1001.
[15]MANDEL L,WOLF E.Optical coherence and quantum optics[M].Britain:Cambridge University Press,1995.