大学物理 ›› 2017, Vol. 36 ›› Issue (1): 28-32.doi: 10.16854 /j.cnki.1000-0712.2017.01.010

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用半导体激光器测普朗克常量

孙正和,卢特安,刘天宇,龙勇机   

  1. 哈尔滨工业大学( 威海) 理学院,山东威海264209
  • 收稿日期:2015-11-10 修回日期:2016-10-09 出版日期:2017-01-20 发布日期:2017-01-20
  • 作者简介:孙正和( 1960—) ,男,山东即墨人,哈尔滨工业大学( 威海) 理学院副教授,硕士,主要从事激光
  • 基金资助:
    全国高等学校物理实验课程教学研究项目( 01-201601-52) ,哈尔滨工业大学( 威海) 大学物理系列课学生素质和创新意识教育研究与探索项目资助.本工作获2015 年山东省大学生物理科技创新大赛一等奖

Adopting semiconductor laser for measuring the Planck constant

SUN Zheng-he,LU Te-an,LIU Tian-yu,LONG Yong-ji   

  1. Department of Physics,Harbin Institute of Technology,Weihai,Shandong 264209,China
  • Received:2015-11-10 Revised:2016-10-09 Online:2017-01-20 Published:2017-01-20

摘要: 本文用小型半导体激光器做单色弱光源,用光电效应法测量普朗克常量,具有精度高、体积小、重量轻、成本低、节约电、使用方便等优点.用光谱分析论证了与相关其他光源比较,半导体激光器光源具有较好的单色性,理论分析了单色光谱线宽度影响测量精确度的原因.

关键词: 小型半导体激光器, 光电效应, 普朗克常量, 单色光谱线宽

Abstract: An experimental method of small semiconductor laser weak light source for measuring the Planck constant based on the photoelectric effect is adopted. It has the advantages of high precision, small volume, light weight, low cost, save electricity,convenient. It has been demonstrated that the semiconductor laser light source has a good monochromaticity compared with the related other light source by the spectral analysis. The reasons of influencing the measurement accuracy because of the monochromatic spectral line width are analyzed theoretically.

Key words: small semiconductor laser, photoelectric effect, Planck constant, monochromatic spectral , line width