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1 Resonance Methods for Increasing Sensitivity of Interferometry …
Fig. 1.16 Interferograms of alcohol lamp flame containing sodium, which was produced separately
in two wavelengths (589.7 nm and 694.3 nm) in infinite width lines. Each pair of interferograms—
a, b, c, d, e, f—characterizes one object state, recorded during pulse generation period in the
wavelength of 589.7 nm and 694.3 nm. Reprinted from [54] with permission
where (n − 1) 1 = (n 0–1 ) air + (n − 1) 1Na and (n − 1) 2 = (n 0–1 ) air + (n − 1) 2Na are
the refraction values provided by the change of density of air in perturbed area and
by the content of sodium atoms for λ 2 = 694.3 nm and λ 1 = 589.7 nm; n 0–1 is the
refraction of unperturbed air layer; l is the typical area thickness.
1 Resonance Methods for Increasing Sensitivity of Interferometry …
Fig. 1.16 Interferograms of alcohol lamp flame containing sodium, which was produced separately
in two wavelengths (589.7 nm and 694.3 nm) in infinite width lines. Each pair of interferograms—
a, b, c, d, e, f—characterizes one object state, recorded during pulse generation period in the
wavelength of 589.7 nm and 694.3 nm. Reprinted from [54] with permission
where (n − 1) 1 = (n 0–1 ) air + (n − 1) 1Na and (n − 1) 2 = (n 0–1 ) air + (n − 1) 2Na are
the refraction values provided by the change of density of air in perturbed area and
by the content of sodium atoms for λ 2 = 694.3 nm and λ 1 = 589.7 nm; n 0–1 is the
refraction of unperturbed air layer; l is the typical area thickness.