Spectra-Physics Tsunami - Conversion for Long Picosecond Operation; Table 7-1: Bi-Fi Selection for Broad Picosecond Operation

Operation
7-9
Refer to Chapter 6, “Alignment: Coarse Phase Adjustment...,” for
information on setting the coarse and fine PHASE controls.
2. Verify the beam is centered on M
10
and output power is optimized.
If the beam is not centered on M
10
, refer to “Optimizing Laser Output”
earlier in this chapter to “walk the beam” and recenter it on
M
1
and M
10.
Conversion for Long Picosecond Operation
1. Install the desired bi-fi filter assembly.
Refer to Table 7-1 and Chapter 6, “Alignment: Selecting, Installing,
and Aligning the Birefringent Filter.”
. Replace the M
1
HR with the appropriate GTI.
*
Refer to Chapter 5, “Installation: Installing the GTI.”
2. Adjust M
2
vertically and horizontally to center the beam on the GTI.
3. Adjust the GTI vertical and horizontal controls to optimize output
power.
4. Install the special matching network assembly in series with the AOM
for systems with pulse width capability over 10 ps.
The network assembly is a small box with an SMA connector on one
end and a short cable on the other. The cable end attaches to the AOM.
*
For a list of available GTIs, refer to Table 10-17.
Table 7-1: Bi-fi Selection for Broad Picosecond Operation
Bi–Fi Type Bi–Fi Dot Color Part Number
Blue
< 20 ps 2–plate Yellow 0434–8953
≥ 20 ps 3–plate Green 0434–8973
Standard
< 20 ps 2–plate Yellow 0434–8953
≥ 20 ps 3–plate Green 0434–8973
Mid-range
< 20 ps 2–plate White 0434–8954
≥ 20 ps 3–plate Orange 0434–8974
Long
< 20 ps 2–plate Yellow 0434–8953
≥ 20 ps 3–plate Green 0434–8973
X-Long
< 20 ps 2–plate Yellow 0434–8953
≥ 20 ps 3–plate Green 0434–8973
Broadband
< 20 ps 2–plate Yellow/Red 0454–1120
≥ 20 ps 3–plate Yellow/Red 0454–1130