Continuum Surelite EX 10, Operation And Maintenance Manual

Page: 43 / 114

Section 3: System Operation
996-0207 33
9. Steer the 532 nm separated from the 532 nm/1,064 nm into a volume absorbing power
meter set on the 3 watt scale.
10. Reset voltage to the original setting by using the
ARROW UP button on front of the PCU (step 6) and
return to continuous operation.
11. Locate the SLD adjust knob on the top of laser
housing assembly and slowly rotate knob for maximum
energy. Unless it is suspected to be grossly misadjusted,
do not rotate more than one full turn in either
direction.
Third Harmonic Generation (SLT)
Table 3 Surelite third harmonic specification
Tripling
355 nm
Surelite I
10
Surelite I
20
Surelite I
30
Surelite II
10
Surelite II
20
Surelite III
10
Surelite EX
10
Energy (mJ) 65/100 60/100 25/70 100/160 70/120 165/225 125/220
Stability ± 4.0
Pulsewidth
≈
1ns < input of 1,064 nm
Polarization >95% horizonal
Linewidth
≈
1.5 x linewidth of 1,064 nm
1. Shut down laser system.
2. Remove housing cover and its cover plate shown on page 32 to allow adjustment knob
of SLT or SLF to seat properly.
3. Locate the second harmonic crystal model SLD-1 and install. See procedure on page 36 .
Note: For maximum 355 nm energy, the second harmonic crystal model SLD-1
must be used with the third harmonic crystal model SLT. Using the second harmonic
crystal model SLD-2 will lower 355 nm energy by >25%.
4. Locate the third harmonic crystal model SLT and install. See procedure on 37 .
5. Install 355 nm dichroics in Continuum’s optional Surelite Separation Package (SSP).
6. Position the SSP as indicated in Figure 13 on page 24.
7.
P
erform Daily Startup Procedure with the single shot mode operational. See page 27 .
8. Note voltage reading on front of PCU and then lower lamp voltage (use ARROW
DOWN button) ~ 200V to just above lasing threshold.
9. 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 blue spot should be seen
on the card. The IR will be fluorescent white.
10. Position the SSP so that the 355 nm and the IR fall cleanly on their respective mirror
surfaces with no clipping. See Figure 15 on page 35 .
11. Steer the 355 nm separated from the 532 nm/1,064 nm into a volume absorbing power
meter set on the 3 Watt scale.