本文介绍一种生物激光处理中不用测量激光束直径而能得知其功率和功率密度的方法及仪表。该方法不仅简化了测量手续、而且更准确。该数字万用表对He-Ne激光功率密度测感元件的有效截面直径可小到200微米(尚可更小)。因而有足够的可信度。而对于CO_2激光光斑只要利用传感元件测出环境温度和激光束(斑)的视在温度即可。目前温度的分辨率可达0.1°F或更小。所测光束截面可小于1 This article describes a method and instrument for measuring the power and power density of a biological laser without measuring the diameter of the laser beam. This method not only simplifies the measuring procedure but also is more accurate. The DMM’s effective cross-section diameter for He-Ne laser power density sensing elements can be as small as 200 microns (which can be even smaller). So there is enough credibility. As for the CO 2 laser spot as long as the use of sensing elements to measure the ambient temperature and laser beam (spot) apparent temperature can be. The current temperature resolution of up to 0.1 ° F or less. The measured beam cross-section can be less than 1