Gold-coated copper cone detector as a new standard detector for F_(2) laser radiation at 157 nm

摘要

A new standard detector for high-accuracy measurements of F_(2) laser radiation at 157 nm is presented. This gold-coated copper cone detector permits the measurement of average powers up to 2 W with an uncertainty of ～1%. To the best of our knowledge, this is the first highly accurate standard detector for F_(2) laser radiation for this power level. It is fully characterized according to Guide to the Expression of Uncertainty in Measurement of the International Organization for Standardization and is connected to the calibration chain for laser radiation established by the German National Metrology Institute.