We present the simultaneous trapping and cooling of ${}^{85}\mathrm{Rb}$, ${}^{87}\mathrm{Rb}$, and ${}^{133}\mathrm{Cs}$ in a triple-species magneto-optical trap (MOT). This demonstration is obtained using an all-fiber compact and robust laser system based on telecom 1.5- and 2-$\mu \mathrm{m}$ technologies. We characterize the two-body interspecies losses in the double- and triple-species MOT. We calculate the two-body interspecies trap-loss coefficient for the ${}^{85}\mathrm{Rb}\text{−}{}^{133}\mathrm{Cs}$ and the ${}^{87}\mathrm{Rb}\text{−}{}^{133}\mathrm{Cs}$ pairs, representing a variation of less than 7% in atom number. No losses are observed between ${}^{85}\mathrm{Rb}$ and ${}^{87}\mathrm{Rb}$ in our experimental conditions. We find that interspecies interactions inside the triple-species MOT do not prevent trapping and cooling ${10}^8$ atoms for each species, making our system suitable for future multispecies cold-atom interferometry applications.

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• Atom interferometry
• Atomic & molecular collisions
• Cooling & trapping
• Atomic gases
• Atom & ion cooling
• Sum-frequency generation