The LLTF Contrast is a continuously tunable high-resolution bandpass filter that effectively converts a NKT Photonics’s supercontinuum source into a widely tunable picosecond laser. The filter transmits, with high efficiency, a single laser line while blocking unwanted lines with excellent out-of-band suppression.
The LLTF Contrast is a non-dispersive filter maintaining the intrinsic single-mode beam quality of the supercontinuum laser enabling a wide range of applications. With two wavelength tuning options, Visible and NIR, the full spectrum of the supercontinuum can be covered.
The LLTF Contrast is compatible with all NKT Supercontinuum sources and is fully plug-and-play – adapting directly to the supercontinuum output collimator.
Control is via USB 2.0 and intuitive Graphical User Interface
The output of the LLTF Contrast is a free-space collimated beam and can optionally be coupled to single-mode polarisation maintaining fibers.
- Single channel tunable band-pass filter
- Exceptional out-of-band suppression
- Narrow line-width and high resolution
- Ultra-wideband tuning range across the UV-Visible-NIR range
- Very stable output pointing stability
- High transmitted beam quality
- Plug-and-play operation
The full spectrum from any NKT Photonics Supercontinuum system can be covered thanks to two options:
|Tunable Wavelength Range||Channel Spectral Bandwidth|
|LLTF Contrast VIS||400-1000 nm||<2.5 nm|
|LLTF Contrast SWIR||1000-2300 nm||<5 nm|
|Number of Wavelength Channels||1|
|Out-of-Band Suppression (> 40 nm from CWL)||>60dB|
|Transmission Efficiency||60% peak transmission|
|Wavelength Calibration||Internally calibrated|
|Wavelength Tuning Resolution||0.1nm|
|Tuning Speed (between any two wavelengths)||<600ms|
|Wavelength Scan||Up to 1000nm/s|
|Beam Quality||Single spatial mode at all wavelengths|
|Input Type||Plug & Play to any
NKT Photonics supercontinuum
|Output Type||Free-space collimated
or multi-mode fiber delivery
or single-mode fiber delivery
|Interface||Graphical User Interface via USB
|Dimensions (W x L x H mm)||230 x 160 x 173|