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We present a detailed exposition of the design for time- and angle-resolvedphotoemission spectroscopy using a UV probe laser source that combines thenonlinear effects of \b{eta}-BaB2O4 and KBe2BO3F2 optical crystals. The photonenergy of the probe laser can be switched between 6.0 and 7.2 eV, with theflexibility to operate each photon energy setting under two distinct resolutionconfigurations. Under the fully optimized energy resolution configuration, weachieve an energy resolution of 8.5 meV at 6.0 eV and 10 meV at 7.2 eV.Alternatively, switching to the other configuration enhances temporalresolution, yielding a temporal resolution of 72 fs for 6.0 eV and 185 fs for7.2 eV. We validated the performance and reliability of our system by applyingit to measuring two typical materials: the topological insulator MnBi2Te4 andexcitonic insulator candidate Ta2NiSe5.

Time-resolved ARPES with probe energy of 6.0/7.2 eV and switchable resolution configuration