At Z-Optics, we design precision bandpass filters with a Full Width Half Maximum (FWHM) of 2~3 nm, engineered for applications requiring outstanding spectral selectivity such as LiDAR systems, fluorescence spectroscopy, astronomical observation, and advanced sensor technologies. Our bandpass filters deliver ultra-narrow bandwidths that effectively minimize noise and spectral overlap, enhancing signal clarity even in challenging environments like light-polluted astronomical settings or complex laser setups.

Key Features

  • Narrow Bandwidth: Precisely controlled FWHM of 2–3 nm allows for accurate isolation of target wavelengths, reducing interference and maximizing detection sensitivity.
  • High Transmission: Achieving transmission rates typically above 85–90% at center wavelengths, ensuring optimal light throughput for high-efficiency optical systems.
  • Robust Out-of-Band Blocking: High optical density blocking (e.g., OD4 or better) outside the passband to eliminate stray light and improve signal-to-noise ratio.
  • Stable Center Wavelength: Tight tolerance on center wavelength (±0.3–0.5 nm), providing repeatable and calibration-grade performance suitable for demanding scientific and industrial uses.
  • Wide Spectral Range: Available across UV to NIR wavelengths to match your specific application needs.

Our 2~3 nm FWHM bandpass filters are especially valuable in:

  • Astronomical Observation: Efficiently suppress light pollution and spectral overlap to enable clear imaging of celestial objects such as nebulae.
  • LiDAR Systems: Deliver precise wavelength matching and wide-angle stability to ensure accurate long-range ranging and detection.
  • Laser Line Selection: Isolate narrow laser emission lines with minimal spectral distortion, critical for Raman spectroscopy and fluorescence excitation.
  • Advanced Medical and Scientific Instruments: Enhance signal integrity and minimize background noise in fluorescence sensors and spectroscopy devices.
  • By integrating our ultra-narrow 2–3 nm bandpass filters into your optical systems, you benefit from high transmission efficiency, excellent out-of-band rejection, and precise spectral control, boosting the performance and reliability of your instruments.

This carefully optimized combination of bandwidth, transmission, and blocking characteristics makes our 2–3 nm FWHM bandpass filters ideal for high-performance optical instrumentation requiring ultra-narrow spectral filtering