A V-shaped spectroscopic cell for FTIR measurements

A V-shaped spacroscopic cell(V-cell) was constructed using two CaF_2 optical plates for FTIR light transparent measurements in the range of 4000-1000 cm~(-1).The spectrum of ethanol was characterized with the standard spectra,excellent fitting was achieved with a bottom-width correction method.The principle of the V-cell was discussed,giving equations for the data interpretation.It shows that the V-cell is an auto-focus type spectroscopic cell,which can effectively avoid absorption saturation with amplifica...