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. 2016 Oct 26;6:36148. doi: 10.1038/srep36148

Figure 4. Dynamical dependence of the probe diffractions when the reference and object beams are switched off at different time.

Figure 4

(a) BPII phase, one beam on for 2 seconds and switched off while the other beam is kept on for 55 seconds. Writing beam powers: 2.4 and 2.1 mW. (b) Same as (a) but for writing beam powers: 3.6 and 3.1 mW. (c) BPI phase, one beam on for ~6 seconds and switched off while the other beam is kept on for ~45 seconds. Writing beam powers: 2.4 and 2.1 mW. (d) Same as (c) but for writing beam powers: 3.6 and 3.1 mW. Dotted line indicates how the diffracted signal would persist for another 2 to 3 minutes if the reference beams is not switched off. In all cases, when the second beam is turned off, the diffraction signal disappears in <5 sec.