Reports until 12:40, Monday 05 June 2017
H1 ISC
peter.king@LIGO.ORG - posted 12:40, Monday 05 June 2017 (36661)
Old ALS-X laser
I measured the output power as a function of laser crystal temperature for the ALS laser that was at EndX
up until recently (InnoLight Prometheus S/N 2011B).

    The laser crystal temperature was varied by ~7 degC, which corresponds to about 42 GHz of frequency
tuning.  At the time of the measurements, the laser settings were:
diode 1 temperature             21.00 degC
diode 2 temperature             20.30 degC
diode current                   1.837 A
doubling crystal temperature    32.9 degC

    The laser was set to the following in order to put it into the middle of the mode hop free region
laser crystal temperature       26.11 degC
doubling crystal temperature    33.09 degC

    The output power of the laser was 1.600 +/- 0.002 W at 1064 nm and 48.1 mW at 532 nm with these
settings.
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