Supercontinuum Tunable Filter
The Laser Line Tunable Filter (LLTF CONTRAST) is a non-dispersive patented (US patent 7557990) optical tunable bandpass filter based on volume Bragg gratings. This tunable filter is ideally connected to a supercontinuum white light laser and act 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 tunable optical filter exhibits remarkable versatility when integrated with supercontinuum sources, allowing for the generation of tunable excitation sources. No alignment or adjustment is required when connecting the optical tunable bandpass filter to a supercontinuum source. The combination of supercontinuum sources with Photon etc. tunable filter unlocks the potential for advanced spectroscopic techniques, including photoluminescence excitation (PLE), photoluminescence (PL), and Raman spectroscopy, enabling precise and insightful analyses.
Key Features
The key features of the LLTF Tunable Filter are:
Out-of-band rejection higher than OD 6
Wide tuning range
Efficiency up to 60%
Free-space or fiber-coupled
Easy and rapid installation
Intuitive control software
Unveil the full potential of your scientific endeavors with the versatility and precision of this supercontinuum tunable filter.
Product Specifications
CONTRAST-SR-VIS | CONTRAST-SR-SWIR | CONTRAST-EXT III | CONTRAST-EXT IV | |
---|---|---|---|---|
Spectral range | 400-1000 nm | 1000-2300 nm (2500 nm optional) | 400-1700 nm | 400-2300 nm (2500 nm optional) |
Bandwidth (FWHM) | 1.5 - 2.5 nm | 2.0 - 5.0 nm | 400-1000 nm: 1.5 - 2.5 nm | 1000-1700 nm: 2.0 - 5.0 nm | 400-1000 nm: 1.5 - 2.5 nm | 1000-2300 nm: 2.0 - 5.0 nm |
Out-of-band rejection | <-60 dB@±40 nm, typically <-30 dB@±10 nm | <-60 dB@±80nm, typically <-30 dB@±20nm | 400-1000 nm: <-60 dB@±40 nm, typically <-30dB@±10 nm | 1000-1700 nm: <-60dB@±80 nm, typically <-30 dB@±20 nm | 400-1000 nm: <-60 dB@±40 nm, typically <-30dB@±10 nm | 1000-2300 nm: <-60dB@±80 nm, typically <-30 dB@±20 nm |
Peak efficiency | Typically around 65% | Typically around 65% | Typically around 65% | Typically around 65% |
Optical density (OD) | > OD6 (measured at 1064 nm) | > OD6 (measured at 1064 nm) | > OD6 (measured at 1064 nm) | > OD6 (measured at 1064 nm) |
Stabilization time/wavelength step | 20 ms < 1 nm; 25 ms / 1 nm; 28 ms / 2 nm; 35 ms / 5 nm; 50 ms / 10 nm | 20 ms < 1 nm; 25 ms / 1 nm; 28 ms / 2 nm; 35 ms / 5 nm; 50 ms / 10 nm | 20 ms < 1 nm; 25 ms / 1 nm; 28 ms / 2 nm; 35 ms / 5 nm; 50 ms / 10 nm | 20 ms < 1 nm; 25 ms / 1 nm; 28 ms / 2 nm; 35 ms / 5 nm; 50 ms / 10 nm |
Dimensions (L x W x H) | 9 x 6.3 x 6.7 (inches), 23 x 16 x 17 (cm) | 9 x 6.3 x 6.7 (inches), 23 x 16 x 17 (cm) | 9 x 6.3 x 6.7 (inches), 23 x 16 x 17 (cm) | 11.8 x 9.1 x 6.7 (inches), 30 x 23 x 17.4 (cm) |
Options & Accessories | ||||
Fibered output | An X-Y-Z translation adjustment allows coupling optimization. FC\APC standard connector (SMA, FC\PC on demand). Both lens and mirror-based models available | An X-Y-Z translation adjustment allows coupling optimization. FC\APC standard connector (SMA, FC\PC on demand). Both lens and mirror-based models available | An X-Y-Z translation adjustment allows coupling optimization. FC\APC standard connector (SMA, FC\PC on demand). Both lens and mirror-based models available | An X-Y-Z translation adjustment allows coupling optimization. FC\APC standard connector (SMA, FC\PC on demand). Both lens and mirror-based models available |
Harmonic filter | Second harmonic suppression included over the 400-500 nm spectral range | Second harmonic suppression included over the 850-1250 nm spectral range. Additional filter for 500-850 nm harmonic suppression available upon request | Second harmonic suppression included over the 400-850 nm spectral range | Second harmonic suppression included over the 400-850 nm spectral range |
Alignement kit | In free space configuration (input/output), the alignment kit allows the user to rapidly find the correct alignment. | In free space configuration (input/output), the alignment kit allows the user to rapidly find the correct alignment. | In free space configuration (input/output), the alignment kit allows the user to rapidly find the correct alignment. | In free space configuration (input/output), the alignment kit allows the user to rapidly find the correct alignment. |
CONTRAST-X | |
Spectral range | X represents a custom spectral range: up to 5 gratings. |
Bandwidth (FWHM) | 0.15 - 0.9 nm |
Out-of-band rejection | Typically -55 dB @± -5 nm |
Peak efficiency | Typically around 65% |
Optical density (OD) | Depends on spectral range |
Stabilization time / wavelength step | 20 ms < 1 nm; 25 ms / 1 nm; 28 ms / 2 nm; 35 ms / 5 nm; 50 ms / 10 nm |
Dimensions (L x W x H) | 9 x 6.3 x 6.7 (inches), 23 x 16 x 17 (cm) |
Options & Accessories | |
Fibered output | An X-Y-Z translation adjustment allows coupling optimization. FC\APC standard connector (SMA, FC\PC on demand). Both lens and mirror based-models available |
Harmonic filter | Upon request |
Alignement kit | In free space configuration (input/output), the alignment kit allows the user to rapidly find the correct alignment. |
Spec Sheet
Publications
Nature
- Advanced materials
Topological state engineering via supersymmetric transformations
Arxiv
- Carbon Nanotubes
Collective states of α-sexithiophene chains inside boron nitride nanotubes
Journal of Astronomical Telescopes, Instruments, and Systems
- Astronomy
Spectral characterization of the Grism and Prism slitless spectrometers for the Nancy Grace Roman Space Telescope
Advanced Photonics Research
- Graphene
hBN-Encapsulated Graphene Coupled to a Plasmonic Metasurface via 1D Electrodes for Photodetection Applications
Nanoscale
- Nanoparticles
Promoting solution-phase superlattices of CsPbBr3 nanocrystals
American Chemical Society
- Other Semiconductors
Two-Dimensional Superstructures from the Gas Phase: Directed Assembly of Copper-Sulfide Nanoplatelets
Advanced Functional Materials
- Other Semiconductors
Illuminating trap density trends in amorphous oxide semiconductors with ultrabroadband photoconduction
Materials Advances
- Other Semiconductors
N,N′-Substituted quinacridones for organic electronic device applications
American Chemical Society
- Nanoparticles
Two-Dimensional Superstructures from the Gas Phase: Directed Assembly of Copper-Sulfide Nanoplatelets
Nature Nanotechnology
- Si
Solving integral equations in free space with inverse-designed ultrathin optical metagratings
SPIE Optical Engineering + Applications
- Advanced materials
Comparison of BRDF results from two different scatterometers for instrument validation in support of satellite instrumentation
IOP Science
- Life Sciences
A high-sensitivity rapid acquisition spectrometer for lanthanide(III) luminescence
ECS Transactions
- Other Semiconductors
Ultrabroadband Photoconduction Response of Sub-gap Defects in Amorphous In-Ga-Zn-O Thin Film Transistors
SPIE: Oxide-based Materials and Devices XI.
- Other Semiconductors
Effect of Hydrogen Incorporation on Sub-Gap Density of States in Amorphous Ingazno Thin-Film Transistors
SPIE: Advances in Photonics of Quantum Computing, Memory, and Communication
- Advanced materials
Spectral Properties of Ultra-Broadband Entangled Photons Generated From Chirped-MgSLT Crystal Towards Monocycle Entanglement Generation
Nano Letters
- Carbon-Based Materials
Measurements of the Population Lifetime of D Band and G′ Band Phonons in Single-Walled Carbon Nanotubes
Review of Scientific Instruments
- Advanced materials
- Life Sciences
- Metrology
High Performance Resonance Raman Spectroscopy Using Volume Bragg Gratings As Tunable Light Filters
Videos
Introduction to the Laser Line Tunable Filter - LLTF
The LLTF combines a wide spectral tunability (400-2300 nm) with the highest out-of-band rejection (< -60 dB) available on the market. When coupled to a supercontinuum source, the LLTF is an ideal tool for spectroscopy, calibration and hyperspectral imaging.
OptinaDx Retinal Deep Phenotyping platform™
White Papers
Overview of Laser Line Tunable Filters and Tunable Laser Sources Applications
Authors Laura-Isabelle Dion-Bertrand
Abstract
Widely Tunable Filter: Technology & Measurement of Critical Specifications
Authors Daniel Gagnon and Laura-Isabelle Dion-Bertrand