2008
DOI: 10.1364/oe.16.011095
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Ultrahigh-Q Nanocavity with 1D Photonic Gap

Abstract: Recently, various wavelength-sized cavities with theoretical Q values of approximately 10(8) have been reported, however, they all employ 2D or 3D photonic band gaps to realize strong light confinement. Here we numerically demonstrate that ultrahigh-Q (2.0x10(8)) and wavelength-sized (V(eff) approximately 1.4(lambda/n)3) cavities can be achieved by employing only 1D periodicity.

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Cited by 240 publications
(193 citation statements)
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“…Researchers have recently designed similar 1-D photonic crystal resonators with a theoretical Q-factor as high as 10 8 . 47 By incorporating such high-Q 1-D resonators, the NOSA architecture can achieve LODs that are similar to those of state of the art optical biosensors while maintaining a smaller device footprint.…”
Section: Discussionmentioning
confidence: 99%
“…Researchers have recently designed similar 1-D photonic crystal resonators with a theoretical Q-factor as high as 10 8 . 47 By incorporating such high-Q 1-D resonators, the NOSA architecture can achieve LODs that are similar to those of state of the art optical biosensors while maintaining a smaller device footprint.…”
Section: Discussionmentioning
confidence: 99%
“…In the past decade, there has been a considerable research effort to develop photonic crystal microcavities characterized by high Q-factor and small mode volume comparable to (λ/n) 3 . Since light is very difficult to localize, different solutions have been proposed in literature that exploit the strong light confinement of photonic bandgaps (PBGs) in two-dimensional (2D) PBG cavities and the total internal reflection (TIR) in one dimension -the direction perpendicular to the 2D plan [17,18] or, alternatively, the confinement of modulated one-dimensional (1D) PBGs with 2D TIR [19].…”
Section: Introductionmentioning
confidence: 99%
“…Over the investigated silica layer thickness range, the value of Q tot nearly approached the absorption quality factor (Q abs ), which is limited by the ohmic loss of silver. This also indicates the positive effects of implementing tapered holes, which benefit from the mode gap effect [30] and result in higher radiation Q rad . The radiation loss is very sensitive to the silica thickness h 2 and the hole center spacing S. Q rad has a minimum value of 13479 at h 2 =10 nm, which is sufficient to approach Q abs according to the relationship given above.…”
mentioning
confidence: 83%