REALIZATION OF THE METHOD OF HOLOGRAPHIC INTERFEROMETRY DURING IMPULSE RECORDINGOF HOLOGRAMS IN PHOTOREFRACTIVE CRYSTALS
A scheme of real-time holographic interferometry using crystals of the sillenite family has been implemented. By the example of recording turbulent air flows, the possibility of using a sequence of nanosecond laser pulses with an intensity at the level of MW/cm2 as a hologram-recording radiation has been demonstrated for the first time. The sensitivity of the proposed interferometry scheme is demonstrated at the level of the refractive index change of ∆n ≈ 10-4 - 10-5, which makes it possible to record the change in air temperature at the level of tens degrees.