Status and Prospect of Laser Power and Energy Metrology

Power and energy is the two basic parameters for laser, the measurement for these two parameters is the most basic work for laser parameter metrology. We summarize the status quo of NIST of America,NPL of England and NIM of China,and show in detail the specification our Optic Metrology Station has possessed, which include the measurement theory, measurement range and measurement uncertainty. The development direction for laser power and energy metrology is given in the end.