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期刊信息
  • 主管单位:
  • 中国科学技术协会
  • 主办单位:
  • 中国仪器仪表学会、上海光学仪器研究所、中国光学学会工程光学专业委员会
  • 主    编:
  • 庄松林
  • 地    址:
  • 上海市军工路516号上海理工大学《光学仪器》编辑部
  • 邮政编码:
  • 200093
  • 联系电话:
  • 021-55270110
  • 电子邮件:
  • gxyq@usst.edu.cn
  • 国际标准刊号:
  • 1005-5630
  • 国内统一刊号:
  • 31-1504/TH
  • 邮发代号:
  • 单    价:
  • 15.00
  • 定    价:
  • 90.00
激光棒干涉测量中单双通法的对比
Comparison of single and double pass methods in laser rod interferometric measurement
投稿时间:2019-04-23  
DOI:10.3969/j.issn.1005-5630.2020.02.002
中文关键词:  波前畸变  激光棒  单次通过  衍射效应  多重成像
英文关键词:wavefront aberration  laser rod  single pass  diffraction effect  multiple imaging
基金项目:江苏省大学生创新创业训练计划(201810288019Y)
作者单位E-mail
祁冰芸 南京理工大学 电子工程与光电技术学院江苏 南京 210094  
张泽宇 南京理工大学 电子工程与光电技术学院江苏 南京 210094  
周康虎 南京理工大学 电子工程与光电技术学院江苏 南京 210094  
陈磊 南京理工大学 电子工程与光电技术学院江苏 南京 210094 chenlei@njust.edu.cn 
摘要点击次数: 2
全文下载次数: 4
中文摘要:
      由于激光棒具有细长的特殊形貌特征,传统的双通测试方法虽然灵敏度较高,但是往往存在明显的衍射效应和多重成像导致的边缘黑环,这会导致有效测量面积的缩减,对于小口径光学元件的测量尤为不利。为了克服这一缺陷,采用单通法测量激光棒的波前畸变,使用直角棱镜作为反射件,使得测试光仅通过激光棒一次,从而减少光路中的等效圆孔数和成像次数,抑制衍射和边缘重叠。利用展开的多小孔模型讨论了衍射效应的影响,并且从成像角度讨论边缘重叠的成因,从而得出单通法的优势。另外,为使参考光与测试光的匹配,需要将直角棱镜旋转至少5.40°偏摆角以提高干涉条纹的对比度。最终测得激光棒波前畸变的峰谷值为0.068λ,均方根值为0.012λ
英文摘要:
      Due to the special shape characteristic of a laser rod, the traditional double-pass test method, which has high sensitivity, tends to have obvious diffraction effect and edge black ring caused by multiple imaging. The result leads to the reduction of the effective measurement area, which has a negative impact particularly on the measurement of small aperture optical components. To avoid these problems, the wavefront aberration of laser rod is measured by the single-pass method. The right-angle prism is used as the reflection part to ensure the test light passes through the laser rod only once, so that the number of equivalent circular holes and the imaging times can be reduced. We use the expanded multi-hole model to discuss the diffraction effect and analyze the cause of edge overlap from the perspective of imaging to derive the advantages of the single-pass method. In addition, considering the matching of the reference light and the test light, it is necessary to rotate the right-angle prism by at least 5.40° to improve the contrast of the interferogram. Finally, the measurement result of the laser rod wavefront was as follows: the peak?valley value is 0.068λ and the root mean square is 0.012λ.
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