HCN-13-25 Wavelength Reference Cell

Gas cells are precision filters whose absorption wavelengths depend on specific molecular energy level transitions. H¹³C¹⁴N molecular absorption lines have been identified by national standards bodies as a primary wavelength reference in the C-band (1530nm-1565nm). Wavelength References' NIST-traceable gas cells are offered in two standard pressures. 100 Torr and 25 Torr (equipv. to SRMs 2519 and 2519a, respectively). Cells are available in two standard sizes - 5.5cm patch length and 16.5cm. Generally, path length will affect measured absorption depth and pressure will affect the linewidth. Gas cells are hard-sealed for long life and feature advanced optical design for very low level of interference artifacts.