
Optical output
20
CONTROL The laser and its accessories can be managed and configured remotely from a
PC using the NKTP CONTROL software. The PC can connect to the laser over
either RS232, USB, or Ethernet links. To configure accessories using the same
PC, the laser is equipped with an external bus interface which can connect up to
eight accessories in a daisy chain configuration. Connecting and managing the
laser with CONTROL is described in “Using CONTROL to Turn ON the Laser” on
page 67.
Temperature
regulation
The temperature of the laser is regulated by the use of cooling fans. To dissipate
the laser’s heat, the fans draw cool air into the laser from the vents on the left and
right panels of the laser. The heated air is then blown out through the rear
exhaust vents. The fan speed is automatically adjusted to maintain a stable laser
temperature. To maintain air flow the laser must be installed with proper
clearance as described in “Mechanical Installation” on page 39.
Accessories A series of accessories are optionally used with the laser to modify the output
beam. For specific application requirements, accessories can deliver or filter the
laser’s beam to obtain a desired narrow band, wide band, or extended spectrum.
An overview of the accessories is described in Appendix D.
Optical output
Supercontinuum The term supercontinuum does not cover a specific phenomenon, but rather
numerous non-linear effects leading to a considerable spectral broadening of the
seed pulses. As spectral broadening is caused by non-linear effects, it increases
with the input pulse power. Accordingly, the width of the spectral output
increases with the output power.
Optical
specifications
Table 1 lists the optical specifications for the SuperK FIANIUM models.
Table 1 Optical specifications
Model FIU-6 FIU-15 FIU-20
Repetition rate [MHz] 78 78 78
Variable repetition rate [MHz]i
i. Rates only available when optional VRR (pulse picker) is included.
0.15 to 78 0.15 to 78 0.15 to 78
Total visible power (380-850 nm) [W] ≈ 0.6 ≈ 1.5 ≈ 2.0
Total power [W] ≈ 2.2 ≈ 5.5 ≈ 6.5
Visible power stability [%] ± 0.5 ± 0.5 ± 0.5
Cut-in wavelength (>1 mW/nm) [nm] 390 410 475
Polarization Random Random Random
Beam quality M2 < 1.1 M2 < 1.1ii
ii. Only above 450 nm wavelengths.
M2 < 1.1
Beam diameter [mm @ nm] ≈ 1 @ 532, ≈ 2 @ 1100, ≈ 3 @ 2000
Beam pointing accuracy [mrad] < 1
2