Two-axis tracking using translation stages for a lens-to-channel waveguide solar concentrator. Academic Article uri icon


  • A two-axis tracking scheme designed for <250x concentration realized by a single-axis mechanical tracker and a translation stage is discussed. The translation stage is used for adjusting positions for seasonal sun movement. It has two-dimensional x-y tracking instead of horizontal movement x-only. This tracking method is compatible with planar waveguide solar concentrators. A prototype system with 50x concentration shows >75% optical efficiency throughout the year in simulation and >65% efficiency experimentally. This efficiency can be further improved by the use of anti-reflection layers and a larger waveguide refractive index.

published proceedings

  • Opt Express

author list (cited authors)

  • Liu, Y., Huang, R., & Madsen, C. K.

citation count

  • 11

complete list of authors

  • Liu, Yuxiao||Huang, Ran||Madsen, Christi K

publication date

  • January 2014