Methods of Measuring Radiation Spectra in a Laboratory Workshop on Physics and Research

Abstract

The authors single out the formation of research skills as one of the most important aspects of teaching students of higher educational institutions in the areas of engineering and technical profile. As part of a laboratory workshop in physics, students acquire professional skills in research and technological fields. In this paper, we consider the method of measuring the radiation spectra of various light sources, which the authors propose to use when setting up laboratory work in physics. The conditions of the experiment are described and the scheme of the working installation is given. Measurements of the radiation spectra are carried out using a monochromator and a photodetector pre-graded in terms of transmission and spectral sensitivity.Examples of the emission spectra of a green LED, a red semiconductor laser and a fluorescent lamp measured by the considered method are given. Recommendations of such experiments are given when conducting laboratory work and research work of students. The proposed method of performing laboratory research will help students acquire skills in working with spectral measuring equipment, teach them not only to measure and build the emission spectra of light sources, but also to calculate the spectral width of the gap at which the spectra were measured and to estimate measurement errors.