LLTF CONTRAST - Laser Line Tunable Filter

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LLTF CONTRAST - Laser Line Tunable Filter

Product catalog summary

Technical Specifications

Spectral Range: The LLTF Contrast covers a spectral range from 400-2500 nm, with custom ranges available. It supports up to 5 gratings, with specific ranges for VIS, SWIR, EXT-III, EXT-IV, and Contrast X.
Spectral Bandwidth (FWHM): Ranges from 1.5 to 5.0 nm depending on the spectral range.
Out of Band Rejection: Typically -60 dB at ±40 nm, with variations depending on the specific range.
Wavelength Selection Accuracy: Ranges from <0.13 nm to <0.66 nm relative accuracy.
Input and Output: Standard input is free-space, compatible with a 12 mm diameter supercontinuum collimator. The output is also free-space.
Power and Efficiency: Maximum input average power is standard at 8W, with options up to 20W. Peak efficiency is typically around 65%.
Optical Density and Damage Threshold: Optical density is > OD6, with a damage threshold of < 5 GW/cm² peak power at 1064 nm.
Beam Requirements: Input beam diameter should be < 5 mm, with divergence < 1.5 mrad.
Stability and Speed: Pointing stability is <0.5 mm displacement at 1 m from the filter, with typical scanning speeds of 25 ms for 1 nm steps.
Software: PHySpec™ control and analysis software for Windows 11, with USB 2.0 connection.
Dimensions: Varying dimensions depending on the model, with operating temperatures from 10 to 40 °C.

Options and Accessories

Fibered Output: Allows coupling optimization with X-Y-Z translation adjustment, compatible with standard fiber connectors.
Alignment Kit: Facilitates optical input alignment in free-space configuration using irises mounted on removable posts.

Graphical Data

The document includes graphs illustrating output power across wavelengths and out-of-band rejection, highlighting the performance of the LLTF Contrast in various configurations.

Catalog excerpts

LLTF CONTRAST - Laser Line Tunable Filter-1

5795 DE GASPE AVENUE, #222 MONTREAL, QUEBEC, H2S 2X3 CANADA LLTF CONTRAST™THE ULTIMATE SUPERCONTINUUM FILTER The Laser Line Tunable Filter is a non-dispersive tunable bandpass filter based on volume Bragg gratings. It combines very high optical density (> OD6), an outstanding out-of-band rejection, and wide tunability. The LLTF can be customized to cover the entire 4002500 nm spectral range in a single instrument with a high spectral resolution. It can be coupled with a wide variety of broadband sources to create a tunable laser source. It can also be used as a cleanup filter for spectroscopy applications. TECHNICAL SPECIFICATIONS BN® © 04-2025 Photon etc. Inc. All rights reserved.

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LLTF CONTRAST - Laser Line Tunable Filter-2

TECHNICAL SPECIFICATIONS CONTRAST VIS CONTRAST SWIR CONTRAST EXT-III CONTRAST EXT-IV Wavelength selection accuracy (relative) Standard input module Free-space and compatible with 12 mm diameter supercontinuum collimator Standard output Maximum input average power Standard 8W - Up to 20W available Typically around 65% Peak efficiency3 Optical density (OD) Damage threshold < 5 GW/cm² peak power @ 1064 nm, 8 ns Input beam diameter requirement Input beam divergence requirement (full angle) Pointing stability across spectral range <0.5 mm displacement @1 m from filter Typical scanning speed <1.0 mm...

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LLTF CONTRAST - Laser Line Tunable Filter

LLTF CONTRAST - Laser Line Tunable Filter

Catalog excerpts

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