An intensity throttle is found inside the class 1 fiber delivery enclosure. The energy can be turned up and down using the nearby Thorlabs controller by toggling the "velocity" switch. A 50:50 beamsplitter sends half the energy to a Coherent energy meter so you can know how much energy is being sent to the fiber. VALUES ARE NOMINALLY ON THE ORDER OF ONLY 1-2mJ!! The upstairs and downstairs LSS shutters must be in the “open” position for laser light to make it to the transport shutter.