气体对光的折射率是其密度的函数,利用这一点可通过光干涉方法测量气体的密度、温度和压力等。用干涉法测量燃烧温度,由于能够以非接触方式获得局部的值以及宽范围内分布状况的整体信息,故可认为是一种有效的燃烧诊断方法。 Gas refractive index of light is a function of its density, the use of this point can be measured by optical interference gas density, temperature and pressure. Using the interferometric method to measure the combustion temperature can be considered as an effective combustion diagnostic method because of the non-contact availability of local values ​​and overall information about the distribution over a wide range.