Chris Stoughton - posted 13:57, Monday 24 July 2023 - last comment - 07:04, Thursday 27 July 2023(11241)
Lasers at Fermilab
I am working with Hudson Loughlin. He is visiting from MIT. We powered on the Mephisto laser 255 (formerly the L IFO of the Holometer). At Injection current of 2.017 and crystal temperatur of 24.57, we read 1.514 W using the Thorlabs power meter.
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Now we turn on Laser 256, formerly the T IFO of the Holometer. At T=24.64 and I=2.011 we read 1.648 W. So, both lasers work!
After running overnight:
* Laser 255: Laser Crystal Temperature = 24.57, Injection Current=2.018, and power is 1.530 W
* Laser 256: Laser Crystal Temperature = 24.63, Injection Current=1.944, and power is 1.585 W
On July 27, laser 255 with I=2.016 and T=24.57 output 1.510 Watts.
We are powering them both down now to reconfigure.