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自1979年《江苏教育》中学版第8期介绍了《自制教学用激光器》后,收到各地不少来信,询问有关自制激光器的功能、制作和激光管的购置供应等问题。现就来信中提出的问题和近两年来对激光高压电源的改进,综合答复于下。激光器在物理教学、实验中,不仅能充分发挥激光的单色性、方向性、相干性和高亮度的固有特点,同时又是物理光学和几何光学实验的理想光源。对一般中学物理演示中难以进行的光的干涉、衍射以及偏振现象等实验,均能便捷进行。凡是用过、或是看见用过使用氦氖激光器进行物理演示实验的教师普遍认为:在中学物理教学中,如配备一台教学用激光器以及有关附件,可以解决许多需要平行光源的光学实验,同时还可定量进行光的干涉、衍射实验,以及测定光波的波长。
Since the introduction of “Home-made Teaching Lasers” in the eighth issue of the “Jiangsu Education” middle school edition in 1979, many letters have been received from all over the country to ask questions about the functions, production, and purchase and supply of laser tubes for home-made lasers. The questions raised in the letter and the improvement of the laser high-voltage power supply in the past two years are comprehensively answered. In physics teaching and experiments, lasers can not only give full play to the inherent characteristics of laser monochromaticity, directionality, coherence and high brightness, but also are ideal light sources for physical optics and geometrical optics experiments. Interference, diffraction, and polarization phenomena that are difficult to perform in physical demonstrations in general middle schools can be easily performed. Teachers who have used or seen the use of helium-neon lasers for physical demonstration experiments generally believe that in the physics teaching of middle schools, if equipped with a teaching laser and related accessories, many optical experiments that require parallel light sources can be resolved. Quantitative light interference, diffraction experiments, and the wavelength of light waves can also be measured.