Large-scale arrays of ultrahigh-Q coupled nanocavities

Masaya Notomi, Eiichi Kuramochi, Takasumi Tanabe

Research output: Contribution to journalArticle

368 Citations (Scopus)

Abstract

Coupled microresonators are expected to play a key role in slow-light engineering and various types of light-matter interaction enhancement, especially if they are based on small and high-Q cavities. Although rapid progress has been made on microresonator performance, large-scale arrays of coupled resonators based on high-Q wavelength-sized cavities have not yet been realized. Here, we show large-scale (N>100) ultrahigh-Q coupled nanocavity arrays based on photonic crystals. This is the first demonstration of large-scale coupled resonator arrays based on wavelength-sized cavities, in which tight-binding sinusoidal dispersion is seen. We confirm that an ultrahigh value of Q (∼1×106) is maintained, even when N is large, and the resonators exhibit very low loss characteristics with regard to light propagation. The ultrahigh value of Q and small size has enabled us to achieve ultraslow light pulse propagation with a group velocity well below 0.01c and a long group delay.

Original languageEnglish
Pages (from-to)741-747
Number of pages7
JournalNature Photonics
Volume2
Issue number12
DOIs
Publication statusPublished - 2008 Dec
Externally publishedYes

Fingerprint

Resonators
resonators
cavities
Slow light
Q factors
Wavelength
Light propagation
Group delay
Photonic crystals
propagation
Demonstrations
group velocity
wavelengths
engineering
photonics
augmentation
pulses
crystals
interactions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

Large-scale arrays of ultrahigh-Q coupled nanocavities. / Notomi, Masaya; Kuramochi, Eiichi; Tanabe, Takasumi.

In: Nature Photonics, Vol. 2, No. 12, 12.2008, p. 741-747.

Research output: Contribution to journalArticle

Notomi, Masaya ; Kuramochi, Eiichi ; Tanabe, Takasumi. / Large-scale arrays of ultrahigh-Q coupled nanocavities. In: Nature Photonics. 2008 ; Vol. 2, No. 12. pp. 741-747.
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