Graded-Index-Rod External Coupled-Cavity Laser with BacMBce Output-Monitor-Stabilized Single- Frequency

We have demonstrated a graded-index-rod external cou- pled-cavity (GRECC) laser with backface output through a partially transmitting external cavity mirror. Laser output is monitored from the backface in a transmitter module with double-loop feedback control which stabilizes output power and maintains single-frequency operation under CW and pseudorandom pulse modulation.