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High transmission rate outside the notch band that enables detection of weak signals! A notch filter with very high durability and reliability.
◆ Multi-band notch filters (dual, triple, quad) can also be custom-made. ◆ Additionally, we offer OEM products tailored to your specifications.
Extremely high laser light blocking value (>OD6)
Semrock's notch filters are highly effective in the field of Raman spectroscopy when there is a need to detect anti-Stokes light, and in the field of fluorescence imaging when performing laser excitation (including Multi-Photon Applications). Additionally, Semrock's filters feature an ion-sputtered hard coat. Like other filters, they offer very high transmittance, durability, and excellent cost performance. 【Features】 ○ Very high laser light blocking value (>OD6) For more details, please contact us or download the catalog.
Narrow bandwidth, high blocking performance, high transmittance
This notch filter is a hard-coated filter with high blocking performance and a narrow bandwidth. It blocks only the narrow wavelength range before and after a specific wavelength, while allowing other wavelength ranges to pass through, enabling spectral separation. In Raman spectroscopy, both Stokes Raman scattering light (longer wavelength than the laser) and anti-Stokes Raman scattering light (shorter wavelength than the laser) can be detected simultaneously.
High precision, integration, stability
A notch filter is also known as a band-stop or band-reject filter. It can transmit most wavelengths while significantly attenuating light within a specific wavelength range (the stop band).
High-performance hard coat filter with narrow notch width, high blocking performance, and high transmittance.
- High transmittance: ＞90% (average) - High blocking performance: OD ＞ 6 - Transmission wavelength: 0.8×CWL～1.33×CWL (typical) - Long lifespan and high durability In addition to Raman spectroscopy, it is ideal for integration into optical measurement systems such as confocal microscopy systems. We also offer a wide range of custom, prototype, and OEM options beyond standard products, so please feel free to consult with us.
Custom wavelengths are also available! Sizes include 25.4mm diameter, 25.4x25.4mm, and 12.7x12.7mm!
We would like to introduce the "Notch Filter" available at Luminex. It has high blocking performance and can be used in Raman spectroscopy, confocal/multiphoton microscopy, fluorescence imaging, and biomedical systems. It has a high transmittance, with standard wavelengths of 532nm, 550nm, 500nm, 488nm, and 473nm, and can also accommodate custom wavelengths. Please feel free to contact us when placing an order. 【Features】 ■ Narrow bandwidth ■ High transmittance ■ Low price ■ High blocking performance OD4 to OD6 ■ Sizes: 25.4mm diameter, 25.4mm x 25.4mm, 12.7mm x 12.7mm ■ Standard wavelengths: 532nm, 550nm, 500nm, 488nm, 473nm *You can download the English version of the catalog. *For more details, please refer to the PDF document or feel free to contact us.
Narrow bandwidth, high blocking performance, high transmittance
This notch filter is a hard-coated filter with high blocking performance and a narrow bandwidth. It blocks only the narrow wavelength range before and after a specific wavelength, while allowing other wavelength ranges to pass through, enabling spectral separation. In Raman spectroscopy, it is possible to simultaneously detect Stokes Raman scattered light (longer wavelength than the laser) and anti-Stokes Raman scattered light (shorter wavelength than the laser).
Craftsman's Point: Achieved optical properties with a periodically varying refractive index. Application: Expected applications in notable fields such as Raman spectroscopy.
We will achieve optical characteristics that have not been realized before by periodically changing the refractive index. Conventional optical filters (optical thin films) consist of alternating layers of high-refractive-index and low-refractive-index films, which exhibit specific optical properties. In contrast, notch filters (band-stop filters) are deposition products designed to periodically change the refractive index in the thickness direction. A characteristic feature is that no optically unnecessary ripple occurs outside the stopband. We can achieve optical characteristics that were not possible with previous optical thin film processing. (Do you have such challenges?) ■ Is it possible to reflect only around the wavelength of 532nm? ■ I would like the unnecessary parts to be unable to transmit optically. ■ Notch filter? Band-stop filter? Rugate filter? ■ I have heard that the measurement difficulty after deposition is high; can you accommodate this?
