LLTF CONTRAST - Laser Line Tunable Filter
OVERVIEW
The Laser Line Tunable Filter (LLTF) is a non-dispersive tunable bandpass filter based on volume holographic gratings. It delivers the highest signal throughput in the industry, and is also unique in that it combines very high optical density (> OD6) and outstanding out-of-band rejection with wide tunability.
A single filter can be tuned from 400 nm to 1000 nm (VIS) or 1000 nm to 2300 nm (SWIR), with bandwidths (FWHM) of <2.5 nm and <5 nm respectively. Custom and extended spectral ranges (up to 2500 nm) and bandwidths (sub-nm) are also available. Photon etc’s LLTF can be coupled with a supercontinuum laser to provide a Tunable Laser Source (TLS).
For more details on our plug and play filter watch this video.
We offer the following models of Laser Line Tunable Filters:
CONTRAST-SR-VIS
Spectral Range: 400-1000 nm
Bandwidth: < 2.5 nm
CONTRAST-SR-SWIR
Spectral Range: 1000-2300 nm (2500 nm optional)
Bandwidth: < 5.0 nm
CONTRAST-EXT IV
Spectral Range: 400-2300 nm (2500 nm optional)
Bandwidth: 400-1000 nm, < 2.5 nm 1000-2300 nm, < 5.0 nm
CONTRAST-X
Spectral Range: Custom
Bandwidth: 0.15 - 0.9 nm
SPECIFICATION
- Central Wavelength: 1350 nm
- Bandwidth (FWHM): <2 or <5 nm
- Peak Transmittance: 65 %
- Initial Wavelength: 400 nm
- Final Wavelength: 2300 nm
- Maximum Input Power: 20 W
- Input Beam Diameter: 5 mm
- Input Beam Divergence Requirement: <1 mrad
- Optical Density (OD): > OD6 (measured at 1064 nm)
- Dimensions (L X W X H): 9 x 6.3 x 6.7 (inches), 23 x 16 x 17 (cm)
Applications
- Detector and Instrument Calibration
- Photoluminescence
- Reflection/Absorption Spectroscopy
- Steady-State Pump-Probe Experiments
- Hyperspectral Imaging
KEY FEATURES
LLTF Contrast series Laser Line Tunable Filters feature the following key attributes
- Fiber optic input/output
- Harmonic filter
- Background supressor
- Alignment kit (for free space)
See attached Datasheet for more details on the accessories and options.