Diffraction from a tunable elastomeric grating with a refracting fluid layer

  • Caironesa Tacogdoy Pada Physics Department, Ateneo de Manila University and Physics Department, Mindanao State University Marawi
  • Raphael A. Guerrero Department of Physics, Ateneo de Manila University
Keywords: elastomer, tunable diffraction grating


We replicate a diffraction grating by soft lithography. Tunable diffraction is accomplished by modifying the grating groove density through the application of mechanical strain on the elastomeric grating replica. The strain-variable diffraction output is extended by adding a refracting liquid layer to the grating. Experimental results are accurately described by the combined effects of diffraction by a deformable grating and refraction by a fluid with a curved surface.

Poster Session A (Experimental Materials Science and Photonics)