Figure 4: Measured far field intensity profiles of various higher-order spatial modes for the signal beam (left) and the frequency-converted beam (right). | Scientific Reports

Figure 4: Measured far field intensity profiles of various higher-order spatial modes for the signal beam (left) and the frequency-converted beam (right).

From: Frequency conversion of structured light

Figure 4

The fidelity of the frequency-converted spatial intensity patterns demonstrates the feasibility of coherently frequency converting complex coherent spatial patterns, as well as higher-dimensional quantum systems.

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