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- Spectroscopy & Tunable Filters
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- Superconitnuum Filter
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- LLTF CONTRAST™
Supercontinuum Tunable Filter
Fast and accurate wavelength tuning for optimal use of supercontinuum sources.
The Laser Line Tunable Filter (LLTF CONTRAST) is a non-dispersive tunable bandpass filter based on volume Bragg gratings. Once coupled to a supercontinuum white laser, it acts as a wavelength selector to produce a continuously tunable source.
It combines outstanding out-of-band rejection with an optical density higher than OD6 and a wideband tuning range across the visible (VIS) and infrared (NIR, SWIR) spectra. This supercontinuum filter can be customized to cover the entire 400 nm to 2500 nm spectral range with high resolution in wavelength.
Moreover, the LLTF CONTRAST requires no alignment or adjustment to unlock its potential for advanced spectroscopic techniques, including photoluminescence excitation (PLE), photoluminescence (PL), and Raman spectroscopy, enabling precise and insightful analyses.
Category
A Growing Spectrum of Solutions
Key Features
Out-of-band rejection higher than OD 6
Wide tuning range (400-2500 nm)
Efficiency up to 60%
Free-space or fiber-coupled
Easy and fast installation
Intuitive control software
LLTF CONTRAST™
Unveil the full potential of your scientific endeavors with the versatility and precision of this supercontinuum tunable filter.
Technical Specifications |
CONTRAST-SR-VIS |
CONTRAST-SR-SWIR |
CONTRAST-EXT III |
CONTRAST-EXT IV |
|---|---|---|---|---|
Technical SpecificationsSpectral range |
CONTRAST-SR-VIS400-1000 nm |
CONTRAST-SR-SWIR1000-2300 nm(2500 nm optional) |
CONTRAST-EXT III400-1700 nm(1700 nm optional) |
CONTRAST-EXT IV400-2300 nm(2500 nm optional) |
Technical SpecificationsBandwidth |
CONTRAST-SR-VIS1.5 - 2.5 nm |
CONTRAST-SR-SWIR2.0 - 5.0 nm |
CONTRAST-EXT III1.5 - 2.5 nm400-1000 nm |
CONTRAST-EXT IV1.5 - 2.5 nm400-1000 nm |
Technical SpecificationsBandwidth |
CONTRAST-SR-VIS1 |
CONTRAST-SR-SWIR1 |
CONTRAST-EXT III2.0 - 5.0 nm1000-1700 nm |
CONTRAST-EXT IV2.0 - 5.0 nm1000-2300 nm |
Technical SpecificationsOut-of-band rejection |
CONTRAST-SR-VIS＜ -60dB@±40nmtypically＜-30dB@±10 nm |
CONTRAST-SR-SWIR＜ -60dB@±80nmtypically |
CONTRAST-EXT III＜-60dB@±40nm400-1000 nm |
CONTRAST-EXT IV＜-60dB@±40nm400-1000 nm |
Technical SpecificationsOut-of-band rejection |
CONTRAST-SR-VIS1 |
CONTRAST-SR-SWIR1 |
CONTRAST-EXT III＜-60dB@±80nm1000-2300 nm |
CONTRAST-EXT IV＜-60dB@±80nm1000-2300 nm |
Technical SpecificationsPeak efficiency |
CONTRAST-SR-VISAround 65%(typically) |
CONTRAST-SR-SWIRAround 65%(typically) |
CONTRAST-EXT IIIAround 65%(typically) |
CONTRAST-EXT IVAround 65%(typically) |
Technical SpecificationsOptical density (OD) |
CONTRAST-SR-VIS＞ OD6(measured at 1064 nm) |
CONTRAST-SR-SWIR＞ OD6(measured at 1064 nm) |
CONTRAST-EXT III＞ OD6(measured at 1064 nm) |
CONTRAST-EXT IV＞ OD6(measured at 1064 nm) |
Technical SpecificationsStabilization timewavelength step |
CONTRAST-SR-VIS20 ms for 1 nm steps |
CONTRAST-SR-SWIR20 ms for 1 nm steps |
CONTRAST-EXT III20 ms for 1 nm steps |
CONTRAST-EXT IV20 ms for 1 nm steps |
Technical SpecificationsDimensions(L x W x H) |
CONTRAST-SR-VIS9 x 6.3 x 6.7 (inches)23 x 16 x 17 (cm) |
CONTRAST-SR-SWIR9 x 6.3 x 6.7 (inches)23 x 16 x 17 (cm) |
CONTRAST-EXT III9 x 6.3 x 6.7 (inches)23 x 16 x 17 (cm) |
CONTRAST-EXT IV11.8 x 9.1 x 6.7 (inches)30 x 23 x 17.4 (cm) |
Technical Specifications - Higher Resolution |
CONTRAST-X |
|---|---|
Technical Specifications - Higher ResolutionSpectral range |
CONTRAST-XX represents a custom spectral range: up to 5 gratings |
Technical Specifications - Higher ResolutionBandwidth |
CONTRAST-X0.15 - 0.9 nm |
Technical Specifications - Higher ResolutionOut-of-band rejection |
CONTRAST-XTypically around 65% |
Technical Specifications - Higher ResolutionPeak efficiency |
CONTRAST-XAround 65%(typically) |
Technical Specifications - Higher ResolutionOptical density (OD) |
CONTRAST-XDepends on spectral range |
Technical Specifications - Higher ResolutionStabilization timewavelength step |
CONTRAST-X20 ms for 1 nm steps |
Technical Specifications - Higher ResolutionDimensions(L x W x H) |
CONTRAST-X9 x 6.3 x 6.7 (inches)23 x 16 x 17 (cm) |
Technical Specifications - Higher ResolutionFibered output |
CONTRAST-XAn X-Y-Z translation adjustment allows coupling optimization. FCAPC standard connector (SMA, FCPC on demand).Both lens and mirror based-models available |
Technical Specifications - Higher ResolutionHarmonic filter |
CONTRAST-XUpon request |
Technical Specifications - Higher ResolutionAlignement kit |
CONTRAST-XIn free space configuration (input/output), the alignment kit allows the user to rapidly find the correct alignment. |
LLTF Contrast Unboxing
Introduction to the Laser Line Tunable Filter – LLTF
Widely Tunable Filter: Technology & Measurement of Critical Specifications
Overview of Laser Line Tunable Filters and Tunable Laser Sources Applications
Custom Products
Beyond our standard product lines, we bring to bear our know-how through collaborations with industry and researchers both local and international.
It’s in our DNA to build systems that measure up to the high standards set by our customers in science and industry.
Visit our Special Projects page or contact us if you can’t find what you’re looking for in our standard product lines.