功能

• Excitation laser light is cut, and Raman shift light on the long wavelength side can be extracted with high transmittance by sharp rise.
• It can be used to detect weak light in Raman scattering.
• At laser wavelengths, this filter has an OD of 6 and excellent light-blocking properties, and has a transmittance of over 90% in the transmission band (RSF-25 C-325RU is over 80%).
• Because of the dielectric multilayer coating, the film absorbs very little light.
• * Transmittance wavelength characteristics may change when used at angles other than 0°.
• * In general, the larger the incident angle, the more the wavelength characteristic shifts toward the shorter wavelength.