Pancharatnam Sunset
Transmission of diffuse light (from an RGB LED flashlight) through a cycloidal diffractive waveplate. The waveplate (provided by BEAM Co., Orlando, FL, USA) makes use of the Pancharatnam phase, where arbitrary variations may be imparted to polarized light.
[OPN 2025 Photo Contest Honorable Mention]
—Image by Ph.D. student Xiulian Shan; edited by advisor Grover Swartzlander, Rochester Institute of Technology, NY, USA
