The project seeks to fabricate a vortex lens (phase shift device) using optical lithography with a future goal of using it for astronomy purposes. initially the goal is to create a lens tuned to a HeNe laser (632.8 nm wavelength) with eight photoresist steps, which causes the light to undergo a phase shift. It is this shift that allows the vortex lens to suppress starlight in the vicinity of extra solar planets; it diffracts the light of the star while preserving the image of the nearby planet.
"The Optical Vortex Lens,"
Journal of the Microelectronic Engineering Conference: Vol. 19
, Article 2.
Available at: http://scholarworks.rit.edu/ritamec/vol19/iss1/2