400%/W second harmonic conversion efficiency in 14 μm-diameter gallium phosphide-on-oxide resonators

Logan, Alan D.; Gould, Michael N.; Schmidgall, E. R.; Hestroffer, Karine; Lin, Zin; Jin, Weiliang; Majumdar, Arka; Hatami, Fariba; Rodríguez, Alejandro W.; Fu, Kai-Mei C.

doi:10.1364/oe.26.033687

Cited by 63 publications

(50 citation statements)

References 64 publications

(73 reference statements)

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“…To compensate for the reduced Q values, the work quickly expanded to include other optical materials with higher optical nonlinearities, such as AlN and GaP. [380,382,383] Leveraging simulation methods originally developed for silica and silicon devices, optical mode modeling was rapidly applied to these devices to optimize their performance in comb generation, greatly accelerating their impact on the field. For example, as show in Fig.…”

Section: Conducting Materials Systemsmentioning

confidence: 99%

Emerging material systems for integrated optical Kerr frequency combs

Kovach

Chen

et al. 2020

Adv. Opt. Photon.

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The experimental realization of a Kerr frequency comb represented the convergence of research in materials, physics, and engineering, and this symbiotic relationship continues to underpin efforts in comb innovation today. While the initial focus developing cavity-based frequency combs relied on existing microresonator architectures and classic optical materials, in recent years, this trend has been disrupted. This paper reviews the latest achievements in frequency comb generation using resonant cavities, placing them within the broader historical context of the field. After presenting well-established material systems and device designs, the emerging materials and device architectures are examined. Specifically, the unconventional material systems as well as atypical device designs that have enabled tailored dispersion profiles and improved comb performance are compared to the current state of art. The remaining challenges and future outlook for the field of cavity-based frequency combs is evaluated.

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Section: Conducting Materials Systemsmentioning

confidence: 99%

Emerging material systems for integrated optical Kerr frequency combs

Kovach

Chen

et al. 2020

Adv. Opt. Photon.

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“…These ultra-high-Q resonances are potentially useful for chemical or biological sensing 42,43 , nonlinear generation 44 , and large-area laser applications 45 . Furthermore, governed by their topological nature, these high-Q resonances are observed to be robust against fabrication imperfections, which paves the way to improve the performance of optoelectronic devices using concepts from topological photonics.…”

mentioning

confidence: 99%

Topologically enabled ultrahigh-Q guided resonances robust to out-of-plane scattering

Jin

Yin

et al. 2019

Nature

415

285

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Due to their ability to confine light, optical resonators 1-3 are of great importance to science and technology, yet their performances are often limited by out-of-plane scattering losses from inevitable fabrication imperfections 4, 5 . Here, we theoretically propose and experimentally demonstrate a class of guided resonances in photonic crystal slabs, where out-of-plane scattering losses are strongly suppressed due to their topological nature. Specifically, these resonances arise when multiple bound states in the continuum -each carrying a topological charge 6 -merge in the momentum space and enhance the quality factors of all resonances nearby. We experimentally achieve quality factors as high as 4.9 × 10 5 based on these resonances in the telecommunication regime, which is 12-times higher than ordinary designs.We further show this enhancement is robust across the samples we fabricated. Our work paves the way for future explorations of topological photonics in systems with open boundary condition and their applications in improving optoelectronic devices in photonic integrated circuits.

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“…Thus, in ring-shaped waveguides an efficient frequency conversion is achieved when a modal quasi phase matching (QPM) is verified [16]. This effect has been experimentally observed in whispering gallery mode resonator [13,17,18]. A periodic variation of the effective nonlinear coefficient can also be obtained by periodically poling the resonator during its fabrication [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Modeling of quasi-phase-matched cavity-enhanced second-harmonic generation

et al. 2020

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We propose a mean field model to describe second harmonic generation in a resonator made of a material with zincblende crystalline structure. The model is obtained through an averaging of the propagation equations and boundary conditions. It takes into account the phase-mismatched terms, which act as an effective Kerr effect. We analyze the impact of the different terms on the steady state solutions, highlighting the competition between nonlinearities.

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400%/W second harmonic conversion efficiency in 14 μm-diameter gallium phosphide-on-oxide resonators

Cited by 63 publications

References 64 publications

Emerging material systems for integrated optical Kerr frequency combs

Emerging material systems for integrated optical Kerr frequency combs

Topologically enabled ultrahigh-Q guided resonances robust to out-of-plane scattering

Modeling of quasi-phase-matched cavity-enhanced second-harmonic generation

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