Enhanced acousto-optic interactions in a one-dimensional phoxonic cavity

Psarobas, I. E.; Papanikolaou, N.; Stéfanou, N.; Djafari‐Rouhani, Bahram; Bonello, Bernard; Laude, Vincent

doi:10.1103/physrevb.82.174303

Cited by 104 publications

(82 citation statements)

References 28 publications

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“…A main objective is the modulation of light by acoustic waves when both excitations are confined inside the same cavity or propagate with a slow velocity inside a waveguide. This topic has been intensively investigated in one-dimensional (1D) multilayer structures 10,11 before being extended to 2D and more recently to slab and strip structures.…”

Section: Introductionmentioning

confidence: 99%

Optomechanic interactions in phoxonic cavities

et al. 2014

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Phoxonic crystals are periodic structures exhibiting simultaneous phononic and photonic band gaps, thus allowing the confinement of both excitations in the same cavity. The phonon-photon interaction can be enhanced due to the overlap of both waves in the cavity. In this paper, we discuss some of our recent theoretical works on the strength of the optomechanic coupling, based on both photoelastic and moving interfaces mechanisms, in different (2D, slabs, strips) phoxonic crystals cavities. The cases of two-dimensional infinite and slab structures will enable us to mention the important role of the symmetry and degeneracy of the modes, as well as the role of the materials whose photoelastic constants can be wavelength dependent. Depending on the phonon-photon pair, the photoelastic and moving interface mechanisms can contribute in phase or out-of-phase. Then, the main part of the paper will be devoted to the optomechanic interaction in a corrugated nanobeam waveguide exhibiting dual phononic/photonic band gaps. Such structures can provide photonic modes with very high quality factor, high frequency phononic modes of a few GHz inside a gap and optomechanical coupling rate reaching a few MHz.

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Section: Introductionmentioning

confidence: 99%

Optomechanic interactions in phoxonic cavities

et al. 2014

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“…Eichenfield et al [23] experimentally demonstrated a one-dimensional (1D) optomechanical crystal (OMC) nanobeam cavity with large OM coupling. Psarobas et al [24] reported that a strong AO interaction occurs when acoustic and optical resonant modes are simultaneously confined in a 1D PXC cavity to motivate multi-phonon exchange. Gomis-Bresco et al [25] demonstrated a 1D PXC nanobeam cavity capable of transducing confined phononic modes inside a complete PNBG.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Guidance of Surface Acoustic and Surface Optical Waves in Phoxonic Crystal Slabs

Wang

Zhang

2017

Crystals

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Phoxonic crystals, which exhibit simultaneous phononic and photonic bandgaps, are promising artificial materials for optomechanical and acousto-optical devices. In this paper, simultaneous guidance of surface acoustic and surface optical waves in truncated phoxonic crystal slabs with veins is investigated using the finite element method. The phoxonic crystal slabs with veins can show dual large bandgaps of phononic and photonic even/odd modes. Based on the phononic and photonic bandgaps, simultaneous surface acoustic and optical modes can be realized by changing the surface geometrical configurations. Both acoustic and optical energies can be highly confined in the surface region. The effect of the surface structures on the dispersion relations of surface modes is discussed; by adjusting the surface geometrical parameters, dual single guided modes and/or slow acoustic and optical waves with small group velocity dispersions can be achieved. The group velocities are about 40 and 10 times smaller than the transverse velocity of the elastic waves in silicon and the speed of light in vacuum, respectively.

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confidence: 99%

“…It has also been realized that the same periodic patterning can simultaneously be used to modify the propagation of light and acoustic waves of similar wavelength [9,10]. Such phoxonic or optomechanical crystals can be engineered to yield strong optoacoustic interactions due to the colocalization of optical and acoustic fields [11][12][13][14].Utilizing silicon-on-insulator (SOI) wafers, similar to that employed to form planar photonic crystal devices [6], patterned silicon nanobeam structures have recently been created in which strong driven interactions are manifest between localized photons in the λ ¼ 1500 nm telecom band and GHz-frequency acoustic modes [13,15,16]. These quasi-one-dimensional (1D) optomechanical crystal (OMC) devices have led to new optomechanical effects, such as the demonstration of slow light and electromagnetically induced amplification [15], radiation pressure cooling of mechanical motion to its quantum ground state [16], and coherent optical wavelength conversion [17].…”

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“Snowflake Crystal” Traps Light and Sound

Marquardt¹

2014

Physics

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We present the fabrication and characterization of an artificial crystal structure formed from a thin film of silicon that has a full phononic band gap for microwave X-band phonons and a two-dimensional pseudoband gap for near-infrared photons. An engineered defect in the crystal structure is used to localize optical and mechanical resonances in the band gap of the planar crystal. Two-tone optical spectroscopy is used to characterize the cavity system, showing a large coupling (g 0 =2π ≈ 220 kHz) between the fundamental optical cavity resonance at ω o =2π ¼ 195 THz and colocalized mechanical resonances at frequency ω m =2π ≈ 9.3 GHz. DOI: 10.1103/PhysRevLett.112.153603 PACS numbers: 42.50.Wk, 42.65.-k, 62.25.-g The control of optical [1,2] and mechanical waves [3,4] by periodic patterning of materials has been a focus of research for more than two decades. Periodically patterned dielectric media, or photonic crystals, have led to a series of scientific and technical advances in the way light can be manipulated and have become a leading paradigm for onchip photonic circuits [5,6]. Periodic mechanical structures, or phononic crystals, have also been developed to manipulate acoustic waves in elastic media, with myriad applications from radio-frequency filters [7] to the control of heat flow in nanofabricated systems [8]. It has also been realized that the same periodic patterning can simultaneously be used to modify the propagation of light and acoustic waves of similar wavelength [9,10]. Such phoxonic or optomechanical crystals can be engineered to yield strong optoacoustic interactions due to the colocalization of optical and acoustic fields [11][12][13][14].Utilizing silicon-on-insulator (SOI) wafers, similar to that employed to form planar photonic crystal devices [6], patterned silicon nanobeam structures have recently been created in which strong driven interactions are manifest between localized photons in the λ ¼ 1500 nm telecom band and GHz-frequency acoustic modes [13,15,16]. These quasi-one-dimensional (1D) optomechanical crystal (OMC) devices have led to new optomechanical effects, such as the demonstration of slow light and electromagnetically induced amplification [15], radiation pressure cooling of mechanical motion to its quantum ground state [16], and coherent optical wavelength conversion [17]. Although two-dimensional (2D) photonic crystals have been used to study localized phonons and photons [18][19][20], in order to create circuit-level functionality for both optical and acoustic waves, a planar 2 D crystal structure with simultaneous photonic and phononic band gaps [21-23] is strongly desired. In this Letter, we demonstrate a 2D OMC structure formed from a planar "snowflake" crystal [23] that has both an in-plane pseudoband gap for telecom photons and a full three-dimensional band gap for microwave X-band phonons. A photonic and phononic resonant cavity is formed in the snowflake lattice by tailoring the properties and inducing a defect in a bandgap-guided waveguide for optical and acoust...

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Enhanced acousto-optic interactions in a one-dimensional phoxonic cavity

Cited by 104 publications

References 28 publications

Optomechanic interactions in phoxonic cavities

Optomechanic interactions in phoxonic cavities

Simultaneous Guidance of Surface Acoustic and Surface Optical Waves in Phoxonic Crystal Slabs

“Snowflake Crystal” Traps Light and Sound

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