赴美签证申请表-高中生评语

兰州大学物理科学与技术学院期末考试
光学试题
（满分
100
分，时间
120
分钟）
班级
_________
姓名
___ _______
学号
__________
一、简答题（每小题
10
分，共
40
分）
1.写成矩形函数，圆域函数、sinc函数、delta函数、高斯 函数的定义，并说明它们对应光
学当中的什么物理量。
2.雨后彩虹、CD光盘、孔雀羽毛、蝴 蝶翅膀当中的彩色各是运用什么光学原理形成的彩色？
3.什么是数字全息？数字全息与光学全息有什么 相同之处和不同之处？简述数字全息在工
程方面的应用。
4.你了解的现代光学的前沿进展是有 哪些？举两个例子说明其在光学工程或者是现代物理
学前沿方面的应用。
二、计算题（每小题< br>20
分，共
60
分）
1.如图所示，虚物会聚于P点，现在图示位置加 上一厚度均匀的透明玻璃片，玻璃片的折
射率为n=1.5，此时光线会聚于P’点。求玻璃片的厚度t 。

2.一光栅每毫米有250条刻线，光栅的长度是4mm，已知光栅的透光部分是不透 光部分的
2倍。现有波长为560nm和560.6nm的两种单色光垂直入射到光栅上，衍射光通过一 个透
镜来会聚，透镜的焦距为1m，求
（1）中央峰内主极大的数目；
（2）第1级衍 射光谱中两种波长的光分开的距离；
（3）能否在第二级光谱中分辨出两种波长的光？
3.强度 为I0的光照射到如图所示的衍射屏，求通过衍射屏的光是光这个角度一般是入射光
矢量与光轴夹角，用 来分解o光，e光的。不清楚你的问题是什么角。非相干照明条件下薄
透镜成像系统的截止频率是相干照 明条件下系统的2倍，即非相干照明条件下能通过薄透
镜到达像面的频率成分更高。试证明上述结论。< br>英语能力测试题（共40分）
科技文献翻译（满分
40
分）
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兰州大学物理科学与技术学院期末考 试
光学试题【答题卡】
（满分
100
分，时间
120
分钟）

班级
_________
姓名
__________
学号
__________
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