This study investigates Structured Light Phenomena (SLP) observed under geomagnetically stable, low-turbulence conditions. Documented events revealed reproducible photonic structures exhibiting radial coherence, quantized spectral bands and phase-locked spatial organization. Analytical models drawn from magnetohydrodynamics, nonlinear optics and quantum field theory describe structured light phenomena as arising from Alfvénic wave propagation, harmonic resonance structuring and plasma-field interactions. Spectral decomposition demonstrates coherence with Schumann resonance harmonics and geomagnetic flux boundaries, supporting the interpretation of structured light phenomena as self-organized macroscopic coherence states arising from nonlocal electromagnetic coupling and atmospheric boundary-layer resonance. These findings establish a quantitative framework linking photonic coherence to mesoscale plasma dynamics, geophysical field structures and resonance-governed energy localization processes. Quantitative models drawn from plasma physics, nonlinear optics and electromagnetic field theory are applied to evaluate and support the observed phenomena. Version 3 Release Note:This Version 3 update finalizes the Structured Light Phenomena (SLP) manuscript with the addition of previously omitted component definitions for the Wave Propagation Equation and consistent integration of a reference to the publicly accessible Research Summary and FAQ [50]. These enhancements improve methodological transparency and mathematical precision. This version is intended as the definitive release for citation and public dissemination. Change log:-Added component definitions to the Wave Propagation Equation for clarity and completeness.-Integrated consistent references to the Research Summary and FAQ [50] across Methods, Conclusion, and Appendix sections.-Verified cross-referencing of all 26 Figures to Table 1 for alignment with mathematical models.-Performed final proofreading and formatting refinements throughout the manuscript.-Updated author block to include ORCID badge and removed residual layout artifacts from earlier versions.