超短脉冲激光光束在一维反射型体全息光栅中的衍射  

Ultrashort Pulsed Laser Beam Diffraction By One Dimensional Reflection Volume Holographic Grating

作　　者：王春花[1] 闫爱民[1] 刘立人[1] 刘德安[1] 王欣[1] 曲伟娟[1] 

机构地区：[1]中国科学院上海光学精密机械研究所信息光学研究室,上海201800

出　　处：《光子学报》2006年第12期1803-1807,共5页Acta Photonica Sinica

基　　金：国家自然科学基金委(No.60177106);国家科学技术部(No.2002CCA03500)资助

摘　　要：基于Kogelnik的耦合波理论,研究了在色散效应的影响下,超短脉冲激光光束在反射型体全息光栅中衍射的性质·研究给出了衍射光及透射光在频谱域及时间域的振幅及强度分布、光栅的光谱宽度及衍射效率随光栅参量及入射条件的变化·数值研究的结果表明,在光栅记录介质色散效应的影响下,衍射光束的光谱宽度减小,脉冲展宽,衍射效率降低·通过适当的选取光栅参量及入射条件,可以控制衍射和透射光束的频谱和时间强度分布,得到满意的衍射和透射光束的带宽和波形,从而可以将其应用于脉冲整形等技术中·By using the coupled wave theory of Kogelnik,the diffraction of an ultrashort pulsed beam by a one dimensional reflection volume holographic grating is investigated. Considering the dispersion effect of the grating media, the spectral and temporal distributions spectral bandwidth of the grating, as well as the diffraction of the diffracted and transmitted beams, the efficiency of the reflection volume grating are studied both analytically and numerically. It is inv are narrowed, temporal widths are broadened, and effect of the grating media. In particular, the dist estigated then diff ortion an that the spectra ction efficienci broadening of 1 widths of the diffraction light es decrease with the dispersion the pulsed beams are shown.They are controlled by the parameters of the grating and the input conditions. These results demonstrate that there is a new potential for the study of the diffraction of the ultrashort pulsed beam by the volume holographic gratings,such as femtosecond pulse shaping.

关 键 词：衍射 耦合波理论 体全息光栅 超短脉冲光束 

分 类 号：O436.1[机械工程—光学工程]