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Phys. Rev. B 58, R10096–R10099 (1998)

Superprism phenomena in photonic crystals

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Hideo Kosaka
Optoelectronics and High Frequency Device Research Laboratories, NEC, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan

Takayuki Kawashima
Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, Japan

Akihisa Tomita
Optoelectronics and High Frequency Device Research Laboratories, NEC, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan

Masaya Notomi and Toshiaki Tamamura
NTT Opto-electronics Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa Prefecture, 243-01, Japan

Takashi Sato and Shojiro Kawakami
Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, Japan

Received 4 August 1998; published in the issue dated 15 October 1998

Extraordinary angle-sensitive light propagation, which we call a superprism phenomenon, was demonstrated at optical wavelength in photonic crystals with three-dimensional-periodic structure fabricated on Si substrate. The propagation beam was swung from -90° to +90° with a slight change in the incident angle within ±12°. This effect together with wavelength sensitivity is at least two orders of magnitude stronger than that of the conventional prism. The incident-angle dependence including negative refraction and multiple beam branching was interpreted from highly anisotropic dispersion surfaces derived by photonic band calculation. These phenomena will be available to fabricate microscale light circuits on Si with LSI-compatible lithography techniques.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.58.R10096
DOI:
10.1103/PhysRevB.58.R10096
PACS:
42.70.Qs, 42.25.Gy, 42.50.Gy, 78.20.Ci
 
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