What types of UV bandpass filters are available from Yutai Optics?
(1) Narrowband UV BPF
FWHM: usually 2-20nm (e.g. 254±5nm, 365±2nm).
Blocking(OD): optical density in other UV bands and visible regions up to OD4-OD6 (i.e., transmittance <0.01%-0.0001%).
Applications:
UV fluorescence detection (e.g. DNA analysis).
UV lithography (e.g. 365nm i-line lithography).
Ozone monitoring (254nm Hg lamp detection).

(2) Broadband UV BPF
FWHM: usually 30-100nm (e.g. 280-400nm).
Blocking(OD): visible region OD3-OD5.
Applications:
UV imaging (e.g. UV microscopy).
UV curing (e.g. UV LED light source filtration).
Environmental UV radiation monitoring (UVA/UVB detection).

(3) Deep Ultraviolet (DUV) Filters (<300nm)
Typical wavelength: 193nm (ArF excimer laser), 248nm (KrF excimer laser).
Applications:
Semiconductor lithography (DUV lithography).
UV Raman spectroscopy.