Absolute irradiance responsivity calibration using diode lasers emitting at three wavelengths for tricolor laser applications

An absolute irradiance responsivity calibration system with diode laser light sources at three wavelengths is presented. This system is based on an optical detector with a silicon photodiode and a uniform light source combined with an integrating sphere. Experimental validation of the calibration system was performed with red, green, and blue lasers, and its utility was successfully demonstrated at all tested laser wavelengths. The expanded uncertainty of the absolute irradiance responsivity has been analyzed to be 0.55-0.57% (k = 2). It is expected that this system can be used to provide validation of tricolor laser-based applications such as displays and lighting.