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Experimental setup for measuring the relative phase difference; HWP1 and HWP2, half wave plates; BS, beam splitter; M, mirror; PM1 and PM2, partial reflection mirrors; W1 and W2, wedges; P1, polarizer; PBS, polarization beam splitter; CM1 and CM2, concave mirrors.
Fabry–Perot interferograms. (a) The spectra of the pump laser (left) and the SBS wave reflected from the SBS-PCM with the phase control technique (right). (b) The spectra of the SBS wave reflected from the SBS-PCM with no phase control technique (left) and that with the phase control technique (right). The free spectral range of the interferometer is .
The relative phase difference (left) and the mosaic intensity profile (right) selected from 220 interference patterns for the cases of (a) , (b) , (c) , (d) , and (e) with .
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