On the characterisation of high speed photodetectors by use of modelocked lasers as the optical source

The authors discuss the use of mode-locked solid state and dye lasers as the optical sources. Such lasers are capable of generating a continuous measurement bandwidth of thousands of gigahertz at a variety of wavelengths. Two measurements are discussed: direct microwave based detection and opto-electronic sampling. The devices tested and used as examples include an indium tin oxide (ITO)-GaAs Schottky photodiode and GaInAs PIN photodiode with bandwidths of 110 GHz and 25 GHz respectively.<
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