Continuum Surelite EX 10, Operation And Maintenance Manual

Page: 42 / 114

Figure 14 Surelite laser head
Second Harmonic Generation (SLD)
Table 2 Surelite second harmonic specifications
Doubling
532 nm
Surelite I
10
Surelite I
20
Surelite I
30
Surelite III
10
Surelite II
20
Surelite III
10
Surelite EX
10
Energy (mJ) 200 160 130 300 250 425 375
Stability
±
3.0
Pulsewidth
≈
1ns < input of 1,064 nm
Polarization > 95% vert.
Linewidth
≈
1.5 x linewidth of 1,064 nm
1. Shut down laser system.
2. Locate the second harmonic crystal model SLD-2 and install. See procedure on page 36 .
If already installed, remove third harmonic crystal (SLT) or fourth harmonic (SLF)
crystal if attached to SLD-2. See procedure on page 36 .
Note: For maximum 532 nm energy the second harmonic crystal model SLD-2
must be used. Using the second harmonic crystal model SLD-1 will lower 532 nm
energy by >25%.
3. Install 532 nm dichroics in Continuum’s optional Surelite Separation Package (SSP).
4. Position the SSP as indicated in drawing Figure 13 on page 24 .
5. Perform Daily Startup Procedure with the single shot mode operational. See page 27 .
6.
Note the voltage reading on the front of the PCU and then lower the lamp voltage (using
ARROW DOWN button) by ~300 V
to just above the lasing threshold.
7. With >OD~4 goggles on, hold a piece of white paper (an index or business card) in
front of the exit port and press the single shot button. A small green spot should be seen
on the card. The IR will be fluorescent white.
8. Position the SSP so that the 532 nm and the IR fall cleanly on their respective mirror
surfaces with no clipping. See Figure 15 on page 35 .