Near-field probing of active photonic-crystal structures

Gérard, Davy; Berguiga, Lotfi; Fornel, Frédérique de; Salomon, L.; Seassal, Christian; Letartre, Xavier; Rojo-Romeo, P.; Viktorovitch, Pierre

doi:10.1364/ol.27.000173

Cited by 35 publications

(26 citation statements)

References 10 publications

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“…21 The SNOM imaging of photoluminescence in a 2D PC etched in a suspended InP membrane has also been reported. 22 However, the potential of this technique to map the intensity distribution of ͑bound͒ modes guided along PCWs has not yet been realized.…”

Section: Introductionmentioning

confidence: 99%

Near-field imaging of light propagation in photonic crystal waveguides: Explicit role of Bloch harmonics

et al. 2002

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We employ a collection scanning near-field optical microscope ͑SNOM͒ to image the propagation of light at telecommunication wavelengths along straight and bent regions of silicon-on-insulator photonic crystal waveguides ͑PCWs͒ formed by removing a single row of holes in the triangular 410-nm-period lattice along the ⌫M direction of the irreducible Brillouin zone. We obtain high quality SNOM images of PCWs excited in the wavelength range of 1520-1570 nm, which indicate good PCW mode confinement and low propagation loss. Using averaged cross sections of the intensity distributions before and after PCW bends, bend loss is evaluated and found to noticeably increase with the increase of the light wavelength from ϳ1 dB at 1520 nm to ϳ6 dB at 1570 nm. We analyze light intensity variations along PCWs measured with the SNOM at different distances from the sample surface. Considering the interference between a quasihomogeneous background field and Bloch harmonics of the PCW mode, we account for spatial frequency spectra of the intensity variations and determine the propagation constant of the PCW mode at 1520 nm. The possibilities and limitations of SNOM imaging for the characterization of PCWs are discussed.

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Section: Introductionmentioning

confidence: 99%

Near-field imaging of light propagation in photonic crystal waveguides: Explicit role of Bloch harmonics

et al. 2002

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“…1a Since NSOM is considered as a very effective tool for the study of mode properties in PC cavities [7][8][9], the additional control of the emission energy of QD in the range of hundreds of meV, provided by the nanoindentation regime, create a very attractive way of spectral matching of the quantum dot exciton and the cavity mode. Below we will present some preliminary results directed towards realisation of such experiments.…”

Section: Emission Spectra Of Qd Structures Nsom Spectra Of Structuresmentioning

confidence: 99%

Single dot near‐field spectroscopy for photonic crystal microcavities

Mintairov

Tang

Merz

et al. 2005

phys. stat. sol. (c)

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In this paper we demonstrate how near-field scanning optical microscopy (NSOM) can be utilized for tuning the emission energy of a single quantum dot (QD) using nanoindentation with the tapered optical fiber probe. Thus the use of NSOM in the nanoindentation regime can provide spectral matching of QD excitons and localised photons in photonic crystal cavities. We present results of NSOM study of confined photon modes in triangular lattice photonic crystal microcavities containing InAs quantum dots with emission wavelength λ~1.2 µm.

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“…However, µPL lacks the spatial resolution needed to study the spatial coupling between QD and PhC cavity, which plays a key role in parameters such as the Rabi frequency and the Purcell factor. Scanning near-field optical microscopy (SNOM) has been used to characterize PhC cavities at room temperature [2][3][4][5][6][7][8] and single QDs at low temperatures. [9][10][11][12] However, near-field studies of the coupling of single QDs to PhC cavity modes have not been reported so far.…”

Section: Introductionmentioning

confidence: 99%

Coupling of single quantum dots to photonic crystal cavities investigated by low-temperature scanning near-field optical microscopy

et al. 2013

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We report a study of single quantum dots inside photonic crystal cavities with a low-temperature scanning near-field optical microscope. The spatial maps of single excitonic lines from the quantum dot show the clear signature of coupling to the cavity modes for small detunings. We also show that the near-field tip can be used to control the exciton-photon coupling at the nanoscale. A general framework for the interpretation of near-field maps of single emitters in cavities is proposed.

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Near-field probing of active photonic-crystal structures

Cited by 35 publications

References 10 publications

Near-field imaging of light propagation in photonic crystal waveguides: Explicit role of Bloch harmonics

Near-field imaging of light propagation in photonic crystal waveguides: Explicit role of Bloch harmonics

Single dot near‐field spectroscopy for photonic crystal microcavities

Coupling of single quantum dots to photonic crystal cavities investigated by low-temperature scanning near-field optical microscopy

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