METHOD OF MEASUREMENT OF POWER CHARACTERISTICS OF HIGH-POWER OPTICAL RADIATION

摘要

measurement technology; power photometry; development of superbright radiation source: high-power electric arcs and lasers. SUBSTANCE: method of measurement of power characteristics of high-power radiation includes absorption of optical radiation and recording thermal response of absorbing element; absorption of radiation is effected on material at X-region of spectrum for radiation power isotherms; recording of thermal response of absorbing element is effected at wave length in X-region of spectrum at time delay found from the following dependence: taudel = tauem.im, taudel>=h2/a where tauem.im is emission impulse duration and "a" is coefficient of thermal diffusivity of material of absorbing element and "h" is thickness of absorbing element. EFFECT: enhanced accuracy of measurements and enhanced reliability of measurements. 1 dwg, 1 tbl