Band Pass Filters for Spectroscopic Applications
Lightwaves2020 specializes in manufacturing a wide wavelength range and high OD blocking thin film filters for spectroscopic applications.

General Features

• Wide operating wavelength range:
  - 200 ~ 1200nm for biomedical
  - 400 ~ 1200nm for visible optical sensing
  - 600 ~ 1700nm for NIR
  - 400 ~ 3200nm for IR spectroscopy
• Typical bandwidth: FWHM 10nm to 40nm
• High OD blocking:
  - >5 OD for UV/Vis/NIR
  - >3 OD for IR 400 ~ 3200nm
• High transmittance: > 70% (NIR), > 60% (Vis), > 50% (UV)
• Steep slope: < 10nm across 50% of Tpeak to 5 OD in UV/Vis/NIR
• High laser damage threshold: > 2J/cm2 (532nm)
• Low auto-fluorescence in UV/Vis for fluorescence microscopic imaging
• Superior environmental reliability

• Biomedical Spectroscopy: 200 ~ 1200nm
  - Center Wavelength: customer specific, within 300nm to 1000nm
  - FWHM: 40nm (or customer specific)

• Visible Spectroscopy (400 ~ 900nm)
  - Center Wavelength: customer specific
  - Typical FWHM: 10 ~ 15nm

• 200 ~ 1200nm
  - Center Wavelength: customer specific
  - FWHM: typical 10nm

• NIR Spectroscopy (700nm ~ 1700nm)

• IR Spectroscopy
  - FWHM: typical 15nm
  - Peak Tran. > 75%
  - Blocking: 400 ~ 3200nm, > 2.5 OD
  - Channels: 1680, 1722, 1759, 1818, 1940, 2050, 2100, 2139, 2180, 2230, 2310, and 2345nm