Assembly of Laser Transport System - 23th of Februari 2007

We have mounted the Laser Transport System to transport the high-power (2.5 W), femtosecond laser pulses (50 fs) from the laser laboratory to the accelerator laboratory. The laser beam is transported through vacuum pipes (10^-4 mbar) to remove all the influences of air (turbulances and dispersion).

The Laser Transport System consists of 4 boxes containing turning mirrors. Between the boxes vacuum tubes are mounted to transport the beam. The entrance and exit tubes are closed by vacuum windows (anti-reflection coated). Two complete laser beam lines can be hosted in the Laser Transport System. For the time being only one line will be used to transport the high-power fundamental beam (800 nm) from the femtosecond laser system.

Entrance of the Laser Transport System on the laser source optical table.	The first box (#1) is placed above the optical table and reflects the laser beams through the wall to the accelerator laboratory.
The three boxes in the accelerator room. The right most box is #2. Between box #3 and #4 the laser beam passes high above the walking area.	Layout of the mirrors in box #3. The laser beam is comming from the right. On the left the ion getter pump is located.
This is box #4.	Layout of the mirrors in box #4. The laser beam is coming from the right and reflected down.
The vacuum pipes from box #4 down to the laser table.	The exit of the Laser Transport System on the accelerator optical table.