285 nm-Laser (S-MOT)

Turning on the Laser

Enable main-switch. Set key to standby.

Wait for the LED to change the color from orange to green to orange (~15 seconds after turning on). Turn the key now.

Start the program FLPM RMU CCT 1.1.0.0 and select the checkbox of Laser Enable.

The Power Setpoint must stay at 0.500 W

Optimize fiber coupling to Iodine Spectroscopy. Transfer-efficiency > 70%

Change Power Setpoint for 285nm SHG operation

2 - 2.500 W for 100-150 mW directly after 285 nm SHG.

Do not exceed much more than 3.5 W

Seedpower: ~ 20 mW

Edit any other values!

DigiLock-Module Server

S-MOT-Laser connected

start DigiLock - SN 01265 - S-MOT-Laser: double click on S-MOT-Laser

push “Scan on”

push “AutoLock”

change the “Offset Value” to 0 V

change the “Setpoint” (under “AutoLock”) of max slop of the middle peak

Push “PID: Lock to Slop”

Lasersystem - Typical power values

The system was build by Jan Friebe and is described in his diplomathesis.

570 nm-Laser

Outputpower after cube to 285 nm-SHG: ~ 1.2 W @ 2.5 W

Operationpower: < @ 3 W

Max outpupower: ??? W @ ??? W

Iodine spectroscopy

Infront fiber: ~ 38 mW @ 0.500 W

After fiber: ~ 29 mW @ 0.500 W (= 400 mV @ 0.500 W) [efficiency ~ 70 %]

Infront fiber: ~ 220 mW @ 2.500 W

After fiber: ~ 160 mW @ 2.500 W (= 2 V @ 2.500 W) [efficiency ~ 70 %]

285 nm-SHG

Outputpower: ~ … mW @ 2.000 W

Outputpower: ~ 100 mW @ 2.500 W

Power for photodiode: ~ … müW

Stabilized power (infront AOM): 80 mW

Power infront the AOM in … order: 80 mW

Power behind the AOM: 43 mW @ 2.500 W (efficiency ~ 50 %)

Power for the Zeaman-slower: … mW

Power behind the mystical mirrow: … mW