New ODiate® Raman Longpass Edge Filters
New ODiate® Raman Longpass Edge Filters
ODiate® Raman Edge Filters deliver critical performance benefits for researchers and instrument developers by improving signal clarity and streamlining optical system design. With ultra-high optical density (OD) blocking of Rayleigh scatter and high transmission of Raman-shifted light, these filters enable precise detection of low-wavenumber Raman signals with exceptional sensitivity and enhanced signal-to-noise ratio.
- ODabs > 6 at laser line
- Tabs ≥ 90% and Tavg ≥ 93% over transmission range
- ODavg ≥ 6 over the blocking range See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | New OD8-RLP488-B ODiate Raman Edge FiltersRaman Longpass Edge Filter, ODiate®, 25.0 mm, 488 nm Laser Line | Check Availability | ||||
 | New OD8-RLP532-B ODiate Raman Edge FiltersRaman Longpass Edge Filter, ODiate®, 25.0 mm, 532 nm Laser Line | Check Availability | ||||
 | New OD8-RLP633-B ODiate Raman Edge FiltersRaman Longpass Edge Filter, ODiate®, 25.0 mm, 633 nm Laser Line | Check Availability | ||||
 | New OD8-RLP785-B ODiate Raman Edge FiltersRaman Longpass Edge Filter, ODiate®, 25.0 mm, 785 nm Laser Line | Check Availability |
Features
Environmental Stability and Physical Durability
The coating systems used to produce ODiate filters use a dense sputtering process to provide robust environmental reliability to meet the highest demands for thin-film coatings. The resulting highly durable coatings meet or exceed testing procedures including humidity, thermal shock, adhesion, chemical resistance, and moderate abrasion per U.S. Military and international standards.
Raman Scattering
Raman scattering is a light-matter interaction in which photons are inelastically scattered by molecules, meaning the scattered light has a different energy (and wavelength) than the incident light. This energy difference corresponds to the molecules' vibrational or rotational energy levels, providing a unique spectral fingerprint that can be used to identify and analyze molecular structures. It's the fundamental principle behind Raman spectroscopy, a powerful, non-destructive chemical and material analysis technique.
ODiate Filter Manufacturing & Metrology
ODiate Raman Edge fFlters are manufactured using advanced thin-film deposition systems, ensuring optical filters achieve excellent transmission and reflection accuracy. ODiate filter specifications are verified utilizing commercial spectrophotometric tools in addition to Newport’s proprietary custom in-house tools to measure edge steepness resolution and deep blocking to optical density 8 [-log10(T)].
Resources
Literature
ODiate Raman Edge Filter Datasheet(1.2 MB, PDF)
