Filters for Raman Spectroscopy

Iridian Spectral Technologies Ltd offers a range of optical filters for Raman spectroscopy applications. All of our filters provide steep edges and high transmission (> 90%). We offer :

Edge pass filters (LPF and SPF):
• Steep edges (cut-offs down to 40 cm-1)
• Blocking (> OD6)
• Low ripple < 4%

Band pass filters:
• Steep edges (cut-offs down to 40 cm-1)
• High blocking (> OD5)
• Narrow FWHM 2-3 nm

Our notch filters provide:
• Steep roll of from peak
• High blocking (> OD6)
• Narrow notch width 10-70 nm FWHM

Dichroic filters :
• Steep edges
• High blocking (> OD5)
• Narrow Cut-off 100 cm-1