405nm Notch Optical Filter

The 405nm Notch Optical Filter is engineered for precision suppression of 405nm laser light in high-sensitivity optical systems. With OD>6 blocking at 405nm and >90% transmission across 250-1200nm, it excels in flow cytometry by eliminating laser scatter and autofluorescence interference, enhancing cell analysis accuracy. Ideal for Raman spectroscopy, it isolates Stokes/anti-Stokes signals while blocking excitation lasers, ensuring high signal-to-noise ratios. In fluorescence microscopy, it enhances imaging clarity by filtering unwanted excitation light. Its robust dielectric coating withstands high-power laser exposure (up to 1J/cm²), making it suitable for medical lasers (e.g., skin therapy) and industrial UV detection. Custom bandwidths (±5nm-±20nm) and substrates (fused silica) are available.