Optical caustics associated with the primary and the secondary rainbows of oblate droplets

Haitao Yu; Jianqi Shen; Cameron Tropea

doi:10.1117/12.2063537

6 August 2014 Optical caustics associated with the primary and the secondary rainbows of oblate droplets

Haitao Yu, Jianqi Shen, Cameron Tropea

Proceedings Volume 9232, International Conference on Optical Particle Characterization (OPC 2014); 923207 (2014) https://doi.org/10.1117/12.2063537
Event: International Conference on Optical Particle Characterization (OPC 2014), 2014, Tokyo, Japan

Abstract

The vector ray tracing (VRT) model is used to simulate the optical caustic structures near the primary and the secondary rainbow angles of oblate water droplets. The evolution process of the optical caustic structures in response to shape deformation of the water droplet is discussed. The dependence of the caustic structures on equatorial radius, refractive index and aspect ratio of the droplet are studied and the curvatures of the two rainbow fringes are calculated.

Citation Download Citation

Haitao Yu, Jianqi Shen, and Cameron Tropea "Optical caustics associated with the primary and the secondary rainbows of oblate droplets", Proc. SPIE 9232, International Conference on Optical Particle Characterization (OPC 2014), 923207 (6 August 2014); https://doi.org/10.1117/12.2063537

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