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Measurement of the phase shift upon reflection from photonic crystals
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View: Figures


Image of FIG. 1.
FIG. 1.

Resonant cavity used to measure the reflection phase. The reflection phase can be interpreted as a penetration into the crystal, resulting in a change in the resonance wavelengths. Lower part is used as a reference.

Image of FIG. 2.
FIG. 2.

Transmittance of the photonic crystal resonator. The fast oscillations are due to the wide resonant cavity. The reflectance of a single photonic crystal is also shown.

Image of FIG. 3.
FIG. 3.

Comparison of resonant peaks for cavities with and without a photonic crystal reflector. At the lower stop band edge the reflection from the photonic crystal is out of phase with that from the gold reflector. At the other edge they are in phase.

Image of FIG. 4.
FIG. 4.

Phase change (measurement and theory) for reflection from a photonic crystal, showing the change from zero to across the stop band. Single crystal reflectance also shown for reference.

Image of FIG. 5.
FIG. 5.

Cavity size needed to meet a specified wavelength requirement. The design is implemented using the phase measurement from Fig. 4 and a cavity refractive index of 1.5.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measurement of the phase shift upon reflection from photonic crystals