Michael and Yuhang

We received a new Mephisto laser this Monday. Michael and I tested lasing current threshold, noise eater engagement current threshold. We measured RIN with different frequency band, current, noise eater on/off, and power stability. In this entry, we report new Mephisto power stability.

We used a power meter to monitor the power stability of new Mephisto. The total monitoring time is 17.5 hours. The power change is attached in the figure. A peak to peak 1.4% power stability was found with irregular power change found at the end of measurement. This shows that laser power doesn't become really stable after long time operation.