Boreal Tunable Optical Filter

BOREAL Visible and NIR Tunable Filter: High-Resolution Wavelength Selection for Supercontinuum Laser Systems

The FYLA Boreal is a precision tunable optical bandpass filter designed to convert broadband supercontinuum sources into a flexible, narrowband, wavelength-selectable illumination system. Engineered for advanced spectroscopy, microscopy, and optical characterization, Boreal enables users to isolate any wavelength across the visible-to-NIR spectrum with high spectral control and stability.

Optimized as an accessory for FYLA supercontinuum laser platforms, Boreal transforms a white-light source into a programmable monochromatic or narrowband source—without sacrificing spatial coherence or output stability.

Key Features

Broad Tunable Spectral Range

• Continuous wavelength selection across 400–1000 nm (VIS) or 1000-1700 nm (NIR)

Tunable Bandwidth Control

• Adjustable spectral bandwidth for applications requiring high-resolution (narrow linewidth), or high-throughput illumination (broader bandwidth)
• Fine control over spectral profile without manual mechanical filter exchange

Plug-and-Play Integration

• Designed as an accessory to FYLA supercontinuum lasers
• Simple optical coupling and system integration
• Software-driven wavelength tuning for rapid operation

Working Principle

Boreal operates as a tunable bandpass filtering system integrated with a broadband supercontinuum laser. While the supercontinuum source emits an ultra-wide spectrum, Boreal is used to spectrally filter this output. This spectral selection isolates an ajustable bandwidth wavelength band, resulting in an output beam that deliverestunable monochromatic or quasi-monochromatic light. This approach eliminates the need for multiple discrete lasers while preserving high spatial coherence,  diffraction-limited beam quality, and a wide spectral coverage.

System Integration

Boreal is designed to operate seamlessly with FYLA supercontinuum laser platforms, forming a compact and highly versatile light engine:

• Broadband source + Boreal = fully tunable laser system
• Replaces multiple discrete lasers with a single integrated solution
• Reduces system complexity and alignment requirements

This architecture is particularly advantageous in automated or multi-wavelength measurement environments.

The Boreal tunable filters enable a new level of flexibility in optical systems by converting broadband supercontinuum light into a fully tunable, high-resolution spectral source. Its combination of wide spectral coverage, software-controlled tuning, and seamless integration makes it an essential tool for modern spectroscopy, imaging, and photonics research.

Tunable Filter Applications

Spectroscopy & Optical Characterization

• Absorption / transmission spectroscopy
• Reflectance measurements
• Photoluminescence excitation (PLE)

Life Sciences & Microscopy

• Fluorescence microscopy
• Hyperspectral imaging
• Confocal and multiphoton systems

Photonics & Semiconductor Testing

• Photonic integrated circuits characterization
• Thin-film and material analysis
• Optical component testing

Advanced R&D Systems

• Tunable illumination for experimental setups
• Calibration of detectors and sensors
• Broadband-to-monochromatic source conversion