Collection: Narrow Bandpass Filter (FWHM = 1 - 5nm)
- Bandwidth (FWHM) from 1nm to 5nm
- OD 5+ @ 200-1200nm
- Ø12.5 mm, Ø25.0 mm to 80x80mm Filters in stock
- Hard Coating Filters
- Price from $105 to $254
- D263T, BK7, B270 as Substrate
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Applications of Narrow Bandwidth Optical Bandpass Filters (≤5nm)
| Application | Use Case | Real Case Example | Reference |
|---|---|---|---|
| Astronomical Observations | Isolating specific emission lines from celestial objects | NASA Solar Dynamics Observatory (SDO) uses Fabry-Perot etalons with sub-5nm bandwidths to observe specific solar emission lines at 393.4nm (Ca II K-line) and 656.3nm (H-alpha) | Big Bear Solar Observatory's Visible Imaging Spectrometer uses 0.5nm bandpass filters for solar chromosphere studies |
| Raman Spectroscopy | Separating weak Raman signals from strong laser excitation | Thermo Fisher Scientific's DXR3xi Raman microscope incorporates ultra-narrow bandpass filters (3nm) to achieve high spectral resolution | Nature publication by Ji et al. (2021) demonstrating surface-enhanced Raman spectroscopy using 3nm bandpass filters to detect single-molecule interactions |
| Fluorescence Microscopy | Isolating specific fluorophore emissions while minimizing crosstalk | Leica's SP8 STED super-resolution microscope uses filters with 2-4nm bandwidths to achieve resolution below diffraction limit | Cell publication by Schermelleh et al. (2019) using multi-color super-resolution microscopy with 4nm bandwidth emission filters |
| Optical Communications | Dense Wavelength Division Multiplexing (DWDM) systems | Ciena's WaveLogic 5 platforms employ narrow filters (typically 0.8nm/100GHz) to pack multiple channels into optical fibers | ITU-T G.694.1 standard defines DWDM grid with channel spacings requiring filters as narrow as 0.4nm (50GHz) |
| LIDAR and Remote Sensing | Detecting specific atmospheric gas absorption lines | NASA's CALIPSO satellite uses 1nm bandpass filters to observe specific atmospheric aerosol signatures | ESA's ADM-Aeolus wind LIDAR mission employs 0.5nm filters to detect Doppler-shifted backscatter from atmospheric molecules |
| Advanced Flow Cytometry | Multi-parameter cellular analysis with minimal spectral overlap | Beckman Coulter's CytoFLEX LX analyzer uses 3nm bandpass filters to discriminate between 21+ fluorescent markers simultaneously | Published work from Stanford FACS facility showing 28-color immunophenotyping using narrow bandpass filters |
| Quantum Optics | Isolating specific atomic transition lines | NIST quantum computing labs use 0.5-3nm filters for precise wavelength selection in ion trap experiments | Nature Physics publication by Monroe et al. (2021) demonstrating quantum gates using trapped ions with narrow-band optical filtering |
| Medical Diagnostics | Fluorescence-based cancer detection | Olympus' endoscopic imaging system uses 4nm bandpass filters for autofluorescence imaging to detect early gastrointestinal cancers | Clinical trial results published in Gastroenterology showing improved detection rates using narrow bandwidth optical filtering |