User`s manual

third reflected from the SM beam hits the PM. The reflected

from the PM beam hits the SM at the height of 108 cm. The

fourth reflected from the SM beam hits the G1 at the height of

108 cm, too. The fourth reflected from the G1 beam hits the

mirror M1. Radiation pattern on the stretcher grating G1 is

shown in the Figure 7:

Figure 7. CW radiation pattern on the stretcher grating

If the spot No 3 is not aligned vertically with one another, a

small horizontal rotation of the VR1 should be done. When the

Ti:Sa laser is mode-locked, pattern seen on the G1 is shown in

the Figure 8:

Figure 8. Femtosecond radiation pattern on the stretcher grating

PLANE MIRROR (PM) ALIGNMENT

You must check a view of the reflected from M1 beam on a

distance about 3 m. If you moved the PM translation stage, the

shape of the beam is changed. You must find the position of the

PM when the beam spot is round. Two spots observed on the

PM should coincide in case of perfect stretcher alignment. The

stretcher alignment is finished with this procedure.

FARADAY ASSEMBLY ALIGNMENT

1. Direct the beam through R, PO. Do the clamp of R more

weaker. Rotating R measure the average power behind PO