Customize Raman Optical Filter China Manufacturer

In Raman spectroscopy equipment, filters selectively filter out unnecessary light. Filters can separate excitation light from Raman signals to avoid interference of laser light sources on Raman signals. This improves the quality and accuracy of Raman signals.
Coligh is specialized in Raman filters manufacturing. The filters include bandpass exitation filter, longpass emission filter and edge dichroic filter also some notch filters.

Our filters have advantages over:

  • Efficiently block lasers and avoid interference of lasers on detection systems
  • Ultra-narrow bandpass filters can select and transmit the required Raman signals and shield light of other wavelengths
  • Deep cutoff blocks lasers and other stray light, and high transmittance enhances weak Raman signals to form an ultra-high signal-to-noise ratio
  • Ultra-narrow bandpass filters can accurately select the wavelength range of interest and improve the resolution of Raman spectra
3. laman Optical filter

Raman Optical Filter Series

  • Raman Filters Set
  • Individual Raman Filters
1064nm laser line bandpass filter
832nm Laser Line Bandpass Filter
632.8 laser cleanup filter coligh
532nm Laser Line Bandpass Filter coligh
785/38nn band notch filter
540nm Optical Notch Filter FWHM 30nm
532nm notch filter

Why Choose Coligh Optical Filter For Raman Spectroscopy?

  • We customize Raman laser line filter, laman Edge filters,Raman bandpass filters, Raman Longpass Filter and Raman Notch filters for Raman Applications
  • Above 90% transmission and OD>6 deep blocking depth
  • Deep slope from high transmission to deep blocking depth to seperate the exitation and emission light
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Coligh Optical Filters for Raman Spectroscopy Applications

Chemistry and Material Science

Materials Science and Chemical Analysis

Raman filters are mainly used for molecular structure analysis, polymer and composite material research to analyze molecular structure and material changes.

Scientific and Biomedical Field

Biomedicine and Life Sciences

Raman filters can help researchers and analysts obtain biological signals and make disease diagnosis by analyzing the molecular composition of cells.

Semiconductor and Electronics Industry

Semiconductor and Electronics Industry

In thin films and nanomaterials, Raman spectroscopy can detect material quality and material characterization in the manufacturing process in real time.

Forensics

Forensics

Raman filters can ensure the accurate determination of Raman scattering signals, thereby quickly identifying drugs and poisons in forensic samples.

FAQs

How should the center wavelength and bandwidth of a Raman filter be determined?

The center wavelength is mainly matched according to the laser wavelength, such as 532nm, 788nm, etc. The bandwidth is determined based on the characteristics of the signal to be resolved, depending on the specific application requirements.

How should the cutoff depth of a Raman filter be determined?

It is recommended that the cutoff depth of a Raman filter reach OD5 or higher, as a higher OD value allows for better removal of unwanted laser light and scattered light.

What material are your filters made of?

We primarily use high-quality optical glass, which is then coated with a hard coating to produce the Raman filters. This ensures both excellent optical performance and durability.

What sizes are available for Raman filters?

For specific available sizes, please consult our sales representatives. We offer standard sizes and can also provide custom sizes upon request.

What is the delivery time?

For in-stock filters, the delivery time is usually within 10 days. For custom products, the delivery time depends on the production schedule, typically ranging from 15 to 20 days.

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