SLI – Tunable Bandpass Filters

Features & Benefits:

  • Wide spectral coverage from 255–1700 nm enables wavelength selection across UV, Visible, NIR, and SWIR
  • Adjustable bandwidth control (2–15 nm FWHM) delivers precise optical filtering for spectroscopy, Raman analysis, fluorescence measurements, and photonics research
  • High transmission (>75%) and OD10 out-of-band blocking ensure superior signal quality, improved measurement accuracy, and reduced background noise
  • Automatic and manual tunable filter options support integration with lasers, LEDs, plasma sources, supercontinuum lasers, and tungsten-halogen light sources
  • Available in India through LaserQuant with local technical support for hyperspectral imaging, optical instrumentation, semiconductor inspection, biomedical imaging, and advanced spectroscopy applications

Spectrolight Tunable Bandpass Filters – Precision Wavelength Selection for Research & Industry

Looking for a high-performance tunable optical filter in India? LaserQuant brings the innovative Spectrolight Flexible Wavelength Selector (FWS) series to researchers, OEMs, spectroscopy labs, hyperspectral imaging developers, Raman spectroscopy users, and photonics professionals across India.

The Spectrolight FWS utilizes patented TwinFilm™ technology to provide real-time control of both center wavelength (CWL) and bandwidth (FWHM) across a broad spectral range from 255 nm to 1700 nm, with high transmission (>75%) and excellent out-of-band blocking (OD10).


Why Choose Spectrolight Tunable Filters?

  • Continuously tunable wavelength selection
  • UV, VIS, NIR & SWIR coverage (255–1700 nm)
  • Adjustable bandwidth from 2–15 nm (selected models)
  • High transmission efficiency (>75%)
  • Excellent out-of-band blocking (OD10)
  • No calibration or alignment required
  • Compatible with lasers, LEDs, tungsten-halogen, plasma, and supercontinuum light sources
  • Ideal for hyperspectral imaging, Raman spectroscopy, fluorescence studies, machine vision, and optical research

Spectrolight Tunable Filter Models

Product Model Type Spectral Range (nm) Coverage Range Bandwidth (FWHM) Key Features
Poly-RED-A5 Automatic 255–1700 ~1450 nm Adjustable 2–15 nm USB software control, Raman mode optional
Poly-RED-A10 Automatic 255–1700 ~1450 nm Adjustable 2–15 nm USB software control, Raman mode optional
Poly-BLUE-A5 Automatic 255–1700 ~1450 nm Fixed 10 or 20 nm USB software control
Poly-BLUE-A10 Automatic 255–1700 ~1450 nm Fixed 10 or 20 nm USB software control
Mono-A5 Automatic ~100 nm coverage ~100 nm Adjustable 2–15 nm USB software control
Mono-A10 Automatic ~100 nm coverage ~100 nm Adjustable 2–15 nm USB software control
Basic-A10 Manual 255–1700 ~100 nm Adjustable 2–15 nm Spectrometer required
High Resolution-A5 Manual ~100 nm ~100 nm Adjustable 2–15 nm High-resolution tuning
High Resolution-A10 Manual ~100 nm ~100 nm Adjustable 2–15 nm Spectrometer required
CenterLine-A10 Manual ~100 nm ~100 nm Fixed 10 or 20 nm Spectrometer required
CWS Manual Single wavelength Fixed 2–15 nm Fast delivery option

Applications of Spectrolight Tunable Filters

Raman Spectroscopy

Achieve precise wavelength selection with adjustable bandwidth control and optional Raman mode for advanced spectroscopy workflows.

Hyperspectral Imaging

Create tunable illumination systems and wavelength-selective imaging platforms across UV, VIS, NIR, and SWIR regions.

Fluorescence & Photoluminescence Research

Select exact excitation wavelengths without using multiple fixed optical filters.

Optical Metrology

Ideal for detector characterization, sensor calibration, optical testing, and photonics R&D.

Machine Vision & Industrial Inspection

Enable wavelength-specific imaging for defect detection, food sorting, semiconductor inspection, and material analysis.


Available in India Through LaserQuant

LaserQuant provides Spectrolight Tunable Bandpass Filters in India with application support for:

  • Academic Research Institutes
  • IITs, IISc & Universities
  • Photonics Laboratories
  • Semiconductor Industry
  • Defence & Aerospace Research
  • Biomedical Imaging
  • Spectroscopy & Optics OEMs

Why Buy from LaserQuant?

  • Authorized technical support in India
  • Application consultation
  • Pre-sales wavelength selection guidance
  • Fast quotations and procurement support
  • Support for spectroscopy, imaging, and photonics projects

Contact LaserQuant today to find the right Spectrolight tunable filter solution for your spectroscopy, imaging, or photonics application.