LLTF CONTRAST - Laser Line Tunable Filter
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How to order?
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Ships from:
Canada
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Sold by:
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On FindLight:
since 2015
Description
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).
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
LLTF CONTRAST - Laser Line Tunable Filter
Specifications |
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|---|---|
| Central Wavelength: | 1350 nm |
| Bandwidth (FWHM): | 2 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) |
Features
LLTF Contrast series Laser Line Tunable Filters feature the following key attributes
- Fiber optic input/output
- Harmonic filter
- Background suppressor
- Alignment kit (for free space)
See attached Datasheet for more details on the accessories and options.
Applications
- Detector and Instrument Calibration
- Photoluminescence
- Reflection/Absorption Spectroscopy
- Steady-State Pump-Probe Experiments
- Hyperspectral Imaging
Frequently Asked Questions
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.
The LLTF Contrast series Laser Line Tunable Filters feature the following key attributes - Fiber optic input/output, Harmonic filter, Background suppressor, Alignment kit (for free space).
The LLTF can be used for Detector and Instrument Calibration, Photoluminescence, Reflection/Absorption Spectroscopy, Steady-State Pump-Probe Experiments, and Hyperspectral Imaging.
The Laser Line Tunable Filter (LLTF) is a non-dispersive tunable bandpass filter based on volume holographic gratings.
The LLTF has a maximum input average power of HP8 (up to 8W), HP20 (up to 20W).