Thumbnail of Hot Sales Infrared Silicon Narrow Bandpass Filter for Laser Wavelength Separation and Sensing Systems photo 1

Description

UM Optics Silicon Narrow Bandpass Filter is a high-performance optical component engineered for precise wavelength selection in infrared (IR) applications. Crafted from high-purity monocrystalline silicon, this filter delivers exceptional transmission within a tightly defined wavelength range (customizable per your specifications, typically 1–5 µm for silicon-based designs) while effectively blocking out-of-band radiation.Designed to withstand harsh operating environments, it features a robust, scratch-resistant coating that ensures long-term stability—even in high-temperature, high-humidity, or vacuum conditions. Unlike conventional filters, its silicon substrate offers superior compatibility with IR detection systems, making it ideal for demanding industrial, scientific, and aerospace tasks where accuracy and reliability are non-negotiable. Whether integrated into spectroscopy setups, thermal imaging devices, or laser systems, this filter consistently minimizes signal interference and enhances measurement precision, empowering your equipment to perform at its peak.

Hot Sales Infrared Silicon Narrow Bandpass Filter for Laser Wavelength Separation and Sensing Systems

Visit the Henan UM Optics Ltd Store

Specifications

Central Wavelength: 4260 nm
Bandwidth (FWHM): 90 nm
Peak Transmittance: 80 %
Material: Silicon
Diameter: 101.6 mm
Blocking: 1.5-10 um
Surface Quality: 60-40, 40-20, or better

Got questions about specs? Use the inquiry form to ask.

Document icon Download Data Sheet Download icon

Features

  • Precise Bandpass Performance: Tightly controlled wavelength range (typical bandwidth: 10–100 nm) with >80% transmission in the passband and <0.1% rejection for out-of-band wavelengths

  • High-Purity Silicon Substrate: Excellent IR transmittance (1–5 µm range) and mechanical durability, resistant to thermal expansion and physical wear

  • Robust Coating Technology: Hard, anti-scratch optical coatings that maintain performance in extreme temperatures (-40°C to 120°C) and high-humidity environments

  • Customizable Specifications: Available in various sizes, bandwidths, and mounting options (e.g., threaded, unmounted) to match specific application requirements

  • Low Signal Interference: Minimizes crosstalk and background noise, improving the sensitivity and accuracy of IR detection systems

Applications

  • Spectroscopy: Used in FTIR (Fourier Transform Infrared) spectroscopy and gas analysis systems to isolate target wavelengths for chemical composition detection

  • Thermal Imaging: Integrated into thermal cameras for industrial inspection (e.g., electronics, machinery) or aerospace surveillance, enhancing image contrast by filtering ambient IR noise

  • Laser Systems: Acts as a wavelength selector in laser cutting, welding, or medical laser devices to ensure precise, targeted energy delivery

  • Environmental Monitoring: Deployed in atmospheric or water quality sensors to detect specific pollutants via their unique IR absorption spectra

  • Defense & Aerospace: Utilized in missile guidance systems or satellite-borne sensors to filter unwanted radiation and improve target detection accuracy

Frequently Asked Questions

What should be noted when integrating silicon narrow bandpass filters into optical systems?
Pay attention to the filter’s effective aperture, avoid exceeding the clear aperture; for high-power laser applications, confirm the damage threshold to prevent coating burnout; and ensure compatibility with the system’s detector response band.
Can silicon narrow bandpass filters be customized, and what parameters are customizable?
Yes. Customizable parameters include center wavelength, bandwidth, substrate size (e.g., Φ12.7 mm, Φ25.4 mm), thickness, coating type.
How to maintain and clean silicon narrow bandpass filters to avoid damage?
Use clean, lint-free optical wipes and anhydrous ethanol or isopropanol for gentle wiping; avoid touching the coated surface with bare hands. Store in a dry, dust-free environment with a desiccant to prevent moisture-induced coating degradation.
What are the key performance indicators affecting filter selection?
Core indicators include center wavelength (target wavelength accuracy), peak transmittance (>80% is common), out-of-band rejection (
What are the temperature resistance limits of silicon narrow bandpass filters, and how to ensure stability in extreme environments?
High-quality coated filters can work stably in the range of -40°C to 120°C. Plasma-enhanced hard coatings are recommended for harsh environments to improve humidity and scratch resistance.

Got more questions? Use the inquiry form to ask the supplier directly.

Similar Products

Request Quote