Details

Autor(en) / Beteiligte

• Folland, Thomas G
• Caldwell, Joshua D

Titel

Precise control of infrared polarization

Ist Teil von

• Nature (London), 2018-10, Vol.562 (7728), p.499-501

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2018

Beschreibungen/Notizen

• A material in which both of these axes are in the plane would enable, for example, the manufacture of ultrathin waveplates - optical components that alter the polarization of incident light. [...]the reflective behaviour of this material would allow light to be confined and manipulated at extremely small scales (less than one-hundredth the wavelength of the light). The authors report lifetimes for such polaritons of up to 20 ps, which is about ten times longer than the best values reported for hexagonal boron nitride9. Because the crystal structure of molybdenum trioxide is highly anisotropic, all three crystal axes, which define the edges of the crystal's unit cell, have different lengths. [...]there is a large difference in the phonon energies associated with these axes and therefore in the corresponding refractive indices - resulting in a birefringence of about 0.31.