An integrated cold atom two-dimensional
magneto-optical trap optical
system includes a heavy pump cooling module, a push module and a reflection module. The heavy pump cooling module generates collimated and expanded heavy pump cooling light; the push module generates convergent push light; and the reflection module changes the polarization state of the heavy pump cooling light output from the two-dimensional
magneto-optical trap cavity and returns it along the original path. At the same time, the V‑GROOVE
fiber head is designed to realize the simultaneous input of 4-way light into one optical
machine port. The entire
system has good optical performance, and the structural design meets the characteristics of high stability, simplification and
miniaturization. The present invention is applied to a space ultracold
atomic physics experimental device, which can provide the required
light field configuration for the two-dimensional
magneto-optical trap of cold atoms and generate a high-
throughput cold atom beam.