Fig. 3: Degenerate mirrorless lasing (DML).
From: Solving tricky quantum optics problems with assistance from large language models
a The energy levels and transitions for the proposed DML scheme, based on the original proposals4,5. b A typical experimental arrangement showing a pump laser interacting with an atomic vapor cell to generate forward or backward propagating DML. The thick diagonal arrows represent light beams; the thinner vertical and horizontal arrows represent the linear polarization of the pump light and the generated mirrorless lasing light, respectively.
