Observation of Dyakonov surface waves.
We report the first experimental observation of Dyakonov surface waves existing at the interface of transparent anisotropic crystals. A Otto-Kretchmann configuration was used to excite the surface waves at the interface between a potassium titanyl phosphate biaxial crystal and an index-matching liquid fulfilling the conditions at which the waves exist. The signature of surface wave excitation was obtained by using enhanced polarization-conversion reflectance phenomena. We measured the cutoff propagation angles for different index-matching liquids, confirming the high sensitivity of the propagation conditions with the properties of the supporting interface.
Takayama
Osamu
O
Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain.
Crasovan
Lucian
L
Artigas
David
D
Torner
Lluis
L
D016880:Anisotropy; D055590:Electromagnetic Phenomena; D053844:Lasers, Solid-State; D010710:Phosphates / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000295:instrumentation / Q000379:methods*; D014025:Titanium / Q000737:chemistry*
D010710:Phosphates; C064806:potassium titanylphosphate; D014025:Titanium