Characterization of 1D photonic crystal nanobeam cavities using curved microfiber

Richards, B. C.; Hendrickson, Joshua R.; Olitzky, J. D.; Gibson, Ricky; Gehl, Michael; Kieu, Khanh; Khankhoje, Uday K.; Homyk, Andrew; Scherer, Axel; Kim, Jin‐Yeon; Lee, Y.-H.; Khitrova, G.; Gibbs, H. M.

doi:10.1364/oe.18.020558

Cited by 12 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We observe that the cavity Qs depend on polarization of the light in the fiber, of contact position on the nanobeam, and of angle between the nanobeam and the fiber [12]. We also present recent progress in the growth and fabrication of 2D photonic crystal slab nanocavities in GaAs with InAs QDs [6,7].…”

mentioning

confidence: 85%

Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities

Richards

Hendrickson

Olitzky

et al. 2010

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

Phone: þ01 520 621 9606, Fax: þ01 520 621 4358We present the results of recent investigations into the fabrication and characterization of high-Q, small mode volume one-dimensional photonic crystal nanobeam cavities in Si and two-dimensional photonic crystal slab nanocavities in GaAs. The nanobeam cavity modes are investigated in transmission by means of a microfiber taper loop apparatus. The spectral transmission profile of the cavity modes is investigated as a function of input polarization into the fiber. The Q of the cavity for different positions and orientations of the fiber taper is investigated. The results are compared to measurements by resonant scattering. The slab nanocavities are investigated by means of quantum dot photoluminescence excitation spectroscopy. We present recent progress in growth and fabrication of such slab nanocavities.

show abstract

mentioning

confidence: 85%

Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities

Richards

Hendrickson

Olitzky

et al. 2010

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to characterize the Q of silicon nanobeam cavities, we use the tapered microfiber probe technique [10,11]. In this technique, an optical fiber is heated and stretched, such that it adiabatically tapers to a region with a diameter on the order of 1 μm.…”

Section: Characterization By Measurement Of the Cavity Quality Factor Qmentioning

confidence: 99%

“…This causes an increase in the measured resonance linewidth and thus a decrease in the measured Q compared to the intrinsic Q of the cavity. This effect was studied in [10], which found that by positioning the probe near the edge of the nanobeam, coupling to the cavity is minimized, leading to a measured Q closer to the intrinsic Q. For this study, all Qs are measured at the edge of the nanobeam cavity.…”

Section: Characterization By Measurement Of the Cavity Quality Factor Qmentioning

confidence: 99%

See 1 more Smart Citation

Effect of atomic layer deposition on the quality factor of silicon nanobeam cavities

et al. 2012

Self Cite

View full text Add to dashboard Cite

In this work we study the effect of thin-film deposition on the quality factor (Q) of silicon nanobeam cavities. We observe an average increase in the Q of 38 31% in one sample and investigate the dependence of this increase on the initial nanobeam hole sizes. We note that this process can be used to modify cavities that have larger than optimal hole sizes following fabrication. Additionally, the technique allows the tuning of the cavity mode wavelength and the incorporation of new materials, without significantly degrading Q.

show abstract

“…Over the last decade, various types of optical microcavities were proposed and investigated, including whispering-gallery microcavities, Fabry-Perot microcavities, and photonic crystal microcavities [2]. Among these cavities, the nanobeam photonic crystal microcavity [3][4][5][6][7][8][9][10][11] provides not only a very high Q value, but also an ultrasmall V and an ultracompact footprint. Nanobeam photonic crystal microcavities with Q values even higher than 10 9 were demonstrated [12].…”

mentioning

confidence: 99%

An improved surface-plasmonic nanobeam cavity for higher Q and smaller V

et al. 2012

Chin. Sci. Bull.

View full text Add to dashboard Cite

We demonstrate a high-Q hybrid surface-plasmon-polariton-photonic crystal (SP3C) nanobeam cavity. The proposed cavities are analyzed numerically using the three-dimensional finite difference time domain (3D-FDTD) method. The results show that a Q-factor of 2076 and a modal volume V of 0.16(/2n) 3 can be achieved in a 50 nm silica-gap hybrid SP3C nanobeam cavity when it operates at telecommunications wavelengths and at room temperature. V can be further reduced to 0.02(/2n) 3 when the silica thickness decreases to 10 nm, which leads to a Q/V ratio that is 11 times that of the corresponding plasmonic-photonic nanobeam cavity (without silica). The ultrahigh Q/V ratio originates from the low-loss nature and deep sub-wavelength confinement of the hybrid plasmonic waveguide, as well as the mode gap effect used to reduce the radiation loss. The proposed structure is fully compatible with semiconductor fabrication techniques and could lead to a wide range of applications. Considerable efforts are currently focused on exploring ways to increase the quality factor Q and decrease the modal volume V of optical microcavities, because of their significant roles in many fundamental physics studies, including light-matter interactions and device physics [1]. A higher Q value indicates a very long photon lifetime, while a small V means that the cavity can localize the photon in a small spatial volume. Over the last decade, various types of optical microcavities were proposed and investigated, including whispering-gallery microcavities, Fabry-Perot microcavities, and photonic crystal microcavities [2]. Among these cavities, the nanobeam photonic crystal microcavity [3-11] provides not only a very high Q value, but also an ultrasmall V and an ultracompact footprint. Nanobeam photonic crystal microcavities with Q values even higher than 10 9 were demonstrated [12]. Although Q values have been raised considerably by sophisticated designs, the smallest achievable V in a conventional dielectric cavity is bound to the diffraction limit, i.e. it is of the order of several times (/2n) 3 [13]. However, in some cases, an ultrasmall V is more important than a higher Q. For example, when the cavity's resonance linewidth is smaller than the emission linewidth of the emitter, decreasing the effective modal volume is the only way to increase the spontaneous emission rate [14].New microcavity schemes were designed to further decrease V. For example, microcavities based on slot waveguides were proposed [14][15][16][17][18]. Microcavities using surface plasmon polaritons (SPPs) were also studied extensively [19,20]. SPPs are electron density waves excited at and propagating along metal-dielectric interfaces [21,22]. Because of their sub-wavelength confinement of optical fields, they are promising candidates for realization of ultrasmall-V nanocavities. However, the reported Q values of SPP cavities thus far are very small and high Q values were only predicted at cryogenic temperatures [23]. The intrinsic high loss caused by metallic absorption ...

show abstract

Characterization of 1D photonic crystal nanobeam cavities using curved microfiber

Cited by 12 publications

References 17 publications

Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities

Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities

Effect of atomic layer deposition on the quality factor of silicon nanobeam cavities

An improved surface-plasmonic nanobeam cavity for higher Q and smaller V

Contact Info

Product

Resources

About