Critical coupling to surface phonon-polaritons in SiC

• Published in: 2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference pp. 1 - 2
• Main Authors: Neuner, B., Korobkin, D., Fietz, C., Carole, D., Ferro, G., Shvets, G.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.05.2009
• Subjects: (240.5420) Polaritons; (240.6690) Surface waves; Air gaps; Frequency; Laser excitation; Laser theory; Optical coupling; Optical reflection; Optical surface waves; Reflectivity; Silicon carbide; Surface waves

We observe critically coupled surface phonon-polariton excitation in SiC, leading to maximum electric field enhancement. A double-scan of wavelength and incidence angle in the ATR configuration demonstrates critical coupling for two air gaps.