![]() ![]() These sizes often demonstrate a dependence on operating current. In combination with a spectroradiometer, additional spectral properties of the laser diodes such as peak wavelength and FWHM half-band widths can be determined. ![]() LIV test systems usually consist of photodiodes, integrating spheres and source-measure-units (SMUs). If we use this to calculate the derivative functions, anomalies (kinks) in the laser diodes become easily recognizable. The V/I curve shows the voltage applied to the laser as a function of the operating current. The L/I curve shows the dependence of optical light intensity of the laser on the operating current and serves to determine the operating point and threshold current. It combines two measurement curves in one graphic. The LIV test is a fast and simple method of determining the key performance parameters of laser diodes. ![]() ![]() The software application SpecWin Pro supports the characterization of laser diodes by integrating and precisely synchronizing all measuring instruments, as well as numerical and graphical analysis of the data. Laser diodes can be optically characterized in detail with the appropriate LIV test equipment – additionally consisting of integrating spheres, photodiodes, source-measure-units (SMUs) and temperature controllers. ![]()
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