The paper reports the first experimental observation that the OAM Schmidt number of SPDC photon pairs changes non-monotonically with crystal thickness, initially decreasing and then increasing as spatial walk-off takes over.
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physics.optics 1years
2026 1verdicts
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Non-monotonic dependence of OAM Schmidt spectrum on crystal thickness
The paper reports the first experimental observation that the OAM Schmidt number of SPDC photon pairs changes non-monotonically with crystal thickness, initially decreasing and then increasing as spatial walk-off takes over.