物理实验 第25卷 匹配.就目前常用的偏振分光棱镜而言(其透射 重庆邮电学院学报,1994,6(1):1~8 曲线如图3),带布氏窗HeNe激光器适用于大部[2]孙萍,杨文,王延辉,等.液晶光阀实时图像变换实 分实验,但仍应注意布氏窗与分光棱镜的相对角 验[J].物理实验,2002,22(11):10~13 度;普通HeNe激光器只适用于对读出光光强稳3]甘巧强,周立辉,谢斌平,等.液晶光阀图像实时反 定性没有要求的实验;红色半导体激光器可以替 转特性的深入研究[J].物理实验,2002,22(10):4 代带布氏窗的HeNe激光器,且更为小巧便宜; 卤钨灯可用于观察液晶光阀对不同波长光的作14苏衡杨方正,金成海,等,液晶光阀工作特性的测 量与分析[]光学学报,1996,16(6):835~856 用所以可以根据具体的实验条件和要求来选用5]沈元华.定性与半定量物理实验教学初探卩]物 合适的光源,这样会取得更好的实验效果 理实验,2004,24(11)25~2 参考文献: [6]马世红.设计性、研究性物理实验的实践情况[ 物理实验,2004,24(11):28~33 1]陈刚,毛幼菊.液晶光阀(LCL)的实验研究[J] Effect of light source on the experiment of liquid crystal light valve SUN Lei Chen Sh MA Xiurfa Physics Department, Fudan University, Shanghai 200433, China) Abstract He-Ne laser with Brewster windows is usually used as a light source in the experiment of liquid crystal light valve. The properties and potential application of He-Ne laser, semiconductor laser and halogen lamp in the same experiment are anal yzed experimentally Key words: liquid crystal light valve(LCL V); light source; polarizing beam splitters(PBS) (上接第44页) [3]王科太,郭履荣,唐继跃.重铬酸盐明胶ωDCG全息[5]唐继跃,王科太,徐萍,等.明胶全息图环境稳定性 图退化的机理分析及抗潮方法之一[]光学技术 的研究[].光学学报,1997,17(9):1216~1220 1998(6):48~51 [6]何兴道,唐伟国,刘大禾,等.DCG全息图的再显影 [4]唐继跃,王科太,郭履荣,等.重铬酸盐明胶全息图 研究].激光与光电子学进展,1995(12):20~25 的吸水退化模型[].光学学报,1998,18(3):339~ Image-era sing and image- redeveloping technique of dCg hologra ms L I Dong ping, WANGJircheng, ZHAO Peigang ( Department of Physics, Ocean University of China, Qingdao 266003, China) Abstract: On the basis of recording images on dichromated gelatin(DCG) and image-erasing tech nique, the optimal image technique of waterwashing image-erasing and isopropyl alcohol dehydrating in back-process are found by experimental analysis. As the result, complete image-erasing and clear reappearance of recorded information are accomplished. An extensive prospect of informatior hiding in DCGis exhi bited Key words: DCG; image-erasing; image- redeveloping 2 C1995-2006 Tsinghua Tongfang Opical Disc Co, Ltd. All rights reserved.匹配. 就目前常用的偏振分光棱镜而言 (其透射 曲线如图 3) ,带布氏窗 He2Ne 激光器适用于大部 分实验 ,但仍应注意布氏窗与分光棱镜的相对角 度 ;普通 He2Ne 激光器只适用于对读出光光强稳 定性没有要求的实验 ;红色半导体激光器可以替 代带布氏窗的 He2Ne 激光器 ,且更为小巧便宜 ; 卤钨灯可用于观察液晶光阀对不同波长光的作 用. 所以可以根据具体的实验条件和要求来选用 合适的光源 ,这样会取得更好的实验效果. 参考文献 : [1 ] 陈刚 ,毛幼菊. 液晶光阀 (LCLV) 的实验研究[J ]. 重庆邮电学院学报 ,1994 ,6 (1) :1～8. [2 ] 孙萍 ,杨文 ,王延辉 ,等. 液晶光阀实时图像变换实 验[J ]. 物理实验 ,2002 ,22 (11) :10～13. [3 ] 甘巧强 ,周立辉 ,谢斌平 ,等. 液晶光阀图像实时反 转特性的深入研究[J ]. 物理实验 ,2002 ,22 (10) :45 ～48. [4 ] 苏衡 ,杨方正 ,金成海 ,等. 液晶光阀工作特性的测 量与分析[J ]. 光学学报 ,1996 ,16 (6) :835～856. [5 ] 沈元华. 定性与半定量物理实验教学初探[J ]. 物 理实验 ,2004 ,24 (11) :25～27. [6 ] 马世红. 设计性、研究性物理实验的实践情况[J ]. 物理实验 ,2004 ,24 (11) :28～33. Effect of light source on the experiment of liquid crystal light valve SUN Lei , CHEN Shao2wen , MA Xiu2fang (Physics Department , Fudan University , Shanghai 200433 , China) Abstract : He2Ne laser with Brewster windows is usually used as a light source in the experiment of liquid crystal light valve. The properties and potential application of He2Ne laser , semiconductor laser and halogen lamp in t he same experiment are analyzed experimentally. Key words : liquid crystal light valve (LCLV) ; light source ; polarizing beam splitters (PBS) (上接第 44 页) [3 ] 王科太 ,郭履荣 ,唐继跃. 重铬酸盐明胶(DCG) 全息 图退化的机理分析及抗潮方法之一[J ]. 光学技术 , 1998 (6) :48～51. [4 ] 唐继跃 ,王科太 ,郭履荣 ,等. 重铬酸盐明胶全息图 的吸水退化模型[J ]. 光学学报 ,1998 ,18 (3) :339～ 343. [5 ] 唐继跃 ,王科太 ,徐萍 ,等. 明胶全息图环境稳定性 的研究[J ]. 光学学报 ,1997 ,17 (9) :1 216～1 220. [6 ] 何兴道 ,唐伟国 ,刘大禾 ,等. DCG全息图的再显影 研究[J ]. 激光与光电子学进展 ,1995 (12) :20～25. Image2erasing and image2redeveloping technique of DCG holograms L I Dong2ping , WAN G Jin2cheng , ZHAO Pei2gang (Department of Physics , Ocean University of China , Qingdao 266003 , China) Abstract : On t he basis of recording images on dichromated gelatin (DCG) and image2erasing tech2 nique , t he optimal image technique of water2washing image2erasing and isopropyl alcohol dehydrating in back2process are found by experimental analysis. As t he result , complete image2erasing and clear reappearance of recorded information are accomplished. An extensive prospect of information2hiding in DCG is exhibited. Key words : DCG; image2erasing ; image2redeveloping 84 物 理 实 验 第 25 卷 © 1995-2006 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved