633nm Notch Optical Filter

The 633nm Notch Negative Filter (Band-Reject Filter) is a precision optical component designed to block 633nm laser and stray light with OD6 deep blocking (＞99.9999% attenuation) while transmitting other wavelengths efficiently (>95% transmittance). Its concave spectral profile enhances signal-to-noise ratio, ideal for Raman spectroscopy (suppressing pump lasers and transmitting Stokes/anti-Stokes signals), laser safety systems (protecting eyes from high-energy lasers), biomedical imaging, and industrial cameras (eliminating light interference for clearer imaging). Utilizing ion-beam sputtering coating technology, it offers robust environmental stability (resistant to temperature extremes and corrosion) and customizable bandwidth (e.g., 25nm or 30nm) and incident angles (0° or tilted). Applications include laser fluorescence analyzers, medical endoscopes, and scientific instruments.