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SuperK LLTF
SuperK LLTF
The Laser Line Tunable Filter (LLTF) Contrast accessory provides a tunable and
extremely narrow bandpass filter with out-of-band (OOB) suppression in the
order of 60 dB. The filter can be continuously tuned over the entire spectrum of
the supercontinuum laser, converting the wide band beam to a finely tuned
picoseconds laser. The LLTF Contrast uses a non-dispersive filter that maintains
the intrinsic single mode beam quality of the laser.
There are four LLTF Contrast models, each provide a specific tuning range as
shown in table Table 22. Depending on the tuning range required, the LLTF
accessory supports filters that cover both visible and NIR tuning ranges. Further,
a separate PC-based GUI application is required to provide filter tuning control
through USB 2.0 connectivity. A diagram of the main accessory connections is
shown in Figure 68.
Output delivery
The beam delivery from the LLTF Contrast is fiber coupled using a Fiber Deliver
(FD) such as a SuperK Connect (fiber coupling connector).
Figure 68 SuperK LLTF Contrast
Table 22 LLTF Contrast Model Specifications
LLTF Model Wavelength Range (nm) Spectral Band-
width (nm)
Maximum Power
(Watts)
LLTF Contrast VIS HP8 400-650 1.8-8.5 8
LLTF Contrast SWIR HP8 430-700 0.5-1.85 8
LLTF Contrast VIS HP20 450-700 2.5-8.5 20
LLTF Contrast SWIR HP20 500-900 3.5-14 20
Output
Aperture
Optical Input
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