1.5 New Class of Detecting Media for Holography—Gaseous Media …
39
Fig. 1.26 a Beams intensity distribution under the absence of sodium vapors; b under sodium vapors
concentration of 10 14 cm −3 ; c under the same sodium vapors concentration including additional
path difference of 2 mm. Reprinted from [54] with permission
When changing beams convergence angle from 2 × 10
−3 to 12 × 10
−3 rad. on
dynamic phase grating, the change of diffraction pattern (up to three procedures) took
place (Fig. 1.27). And when the second cell with sodium vapors, optical density of
which is closely connected with optical density in the first cell and what is equivalent
to the exclusion of wavelength interval from the initial beams spectrum corresponding
to sodium vapors absorption lines, is put before interferometer, then additional beams
disappeared.
Fig. 1.27 Change of the diffraction pattern on dynamic phase grating at change of convergence
angle between beams recording this grating. Reprinted from [54] with permission
39
Fig. 1.26 a Beams intensity distribution under the absence of sodium vapors; b under sodium vapors
concentration of 10 14 cm −3 ; c under the same sodium vapors concentration including additional
path difference of 2 mm. Reprinted from [54] with permission
When changing beams convergence angle from 2 × 10
−3 to 12 × 10
−3 rad. on
dynamic phase grating, the change of diffraction pattern (up to three procedures) took
place (Fig. 1.27). And when the second cell with sodium vapors, optical density of
which is closely connected with optical density in the first cell and what is equivalent
to the exclusion of wavelength interval from the initial beams spectrum corresponding
to sodium vapors absorption lines, is put before interferometer, then additional beams
disappeared.
Fig. 1.27 Change of the diffraction pattern on dynamic phase grating at change of convergence
angle between beams recording this grating. Reprinted from [54] with permission