We have measured the polarization-dependent phase shift imparted to the radiation reflected by a two-dimensional photonic crystal within the band gap spectral region. We show that the relative phase between retroreflected basis polarizations can be large, reaching and exceeding a quarter of a wave in spectral regions of extremely high reflectivity for certain crystals. Using this property, we have directly experimentally demonstrated the operation of a reflective quarter-waveplate. All-dielectric, reflective waveplates could generate new applications involving polarization control.
© 2006 IEEE
D. R. Solli, C. F. McCormick, and J. M. Hickmann, "Polarization-Dependent Reflective Dispersion Relations of Photonic Crystals for Waveplate Mirror Construction," J. Lightwave Technol. 24, 3864-3867 (2006)