摘要
本文讨论宽频带GSM光束经过全息光栅的传输．理论结果表明，一束GSM光束经过振幅分布为正弦分布的全息光杨衍射，得到三束GSM光束．即零级行射光束和士1级衍射光束。零级光束的传播方向与人射的光束方向相同；士1级光束的传播方向们转了一个角度，并分别对称于零级光束。三束衍射光束的光谱都发生变化。本文对这种光谱变化（或称“W0lf效应”）的物理含义给出解释。即，士1级光束的光谱变化起源于GSM光束经过全息光栅的衍射；而零级光束的光谱变化则起源于有限光束尺寸的GSM光束的衍射效应。
In this paper, propagation of a highspectrumband Gaussian Schell- model(GSM)beam through a thin hologram diffraction grating is discussedi The theoretic results showthat, when a GSM beam passes through a thin hologram diffraction grating with cosinetransmission, three diffracted beams are obtained. i-e.,zero±1 order beams.Thepropagation direction of the zero order is the same as that of the incident GSM beam;but the ±1 order beams are symmetrically tilted with the zero order beam by a certainangle. The spectra of aIl the three diffracted beams are changed aller passing through thegrating. The physicaI interpretation for the spectral changes(or 'Wolf effect') is given.The spectral changes of ±1 order beams are due to the diffraction of the GSM beam bythe grating; the spectral change of the zero order beam originates fronl the diffraction ofthe size of tl1e GSM beam in the free space.
出处
《量子电子学报》
CAS
CSCD
1997年第5期442-446,共5页
Chinese Journal of Quantum Electronics
基金
惯性约束聚变青年科学基金
