 |
To verify the single longitudinal mode characteristics of the laser, we performed radio frequency (RF) spectrum measurements using a 12.5 GHz photodetector (PD) and a 26.5 GHz signal analyzer.
The test results show that in the frequency range of 0–1000 MHz, no obvious longitudinal mode beat frequency signals were observed. This result strongly confirms that our laser operates stably in single longitudinal mode, which is consistent with our design expectations and provides a guarantee for its application in high-precision fields. |
IEEE/ICACT20260337 Slide.13
[Big Slide]