Collection: Raman Filter

In Raman spectroscopy, various wavelengths are utilized to optimize the detection of molecular vibrations and minimize interference from fluorescence. The most commonly used wavelengths include:

• 532 nm: This wavelength is favored for its high excitation efficiency and is particularly effective for materials like carbon nanotubes and metal oxides. It provides good sensitivity but may induce fluorescence in some samples.
• 785 nm: This is the most popular wavelength in Raman spectroscopy, striking a balance between scattering efficiency and fluorescence interference. It is suitable for over 90% of Raman-active materials, making it a versatile choice for many applications.
• 1064 nm: Primarily used when samples exhibit strong fluorescence at shorter wavelengths. While it has lower excitation efficiency compared to 532 nm and 785 nm, it minimizes fluorescence interference, making it advantageous for certain materials.