Material carrier relaxation time detection system and method

The invention discloses a material carrier relaxation time detection system and method. The system can detect the energy relaxation time of carriers of a material. The system is composed of a light source, a power division time delay array module, a multi-path light detection module, a position adjusting device and a data processing module. The invention further discloses a power division time delay array module structure, and the module is prepared from hollow photonic crystal fibers and comprises an optical transmission unit, a power division unit and a time delay array unit. Compared with the existing carrier relaxation time detection scheme, the system can realize multi-point detection inside and outside the pumping light spot, the inter-band relaxation time can be obtained according to the detection result, the relaxation time in the space scattering band under the condition of an electric field or no external electric field can be provided, and the detection efficiency is improved at the same time. 本发明公