International Journal of Spectroscopy / 2014 / Article / Fig 1

Research Article

Optical Path Length Calibration: A Standard Approach for Use in Absorption Cell-Based IR-Spectrometric Gas Analysis

Figure 1

Schematic diagram of the setup used to calibrate the optical path length of a gas cell under test (CUT) with = 21 m (nominally). The reference cell has a nominal optical path length of 0.2 m. PD: photodiode. FP: Fabry-Perot etalon (removable).
132607.fig.001

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.