High-Q silicon photonic crystal cavity for enhanced optical nonlinearities

@article{Dharanipathy2014HighQSP,
  title={High-Q silicon photonic crystal cavity for enhanced optical nonlinearities},
  author={Ulagalandha Perumal Dharanipathy and Momchil Minkov and Mario Tonin and Vincenzo Savona and Romuald Houdr'e},
  journal={Applied Physics Letters},
  year={2014},
  volume={105},
  pages={101101}
}
We fabricate and experimentally characterize an H0 photonic crystal slab nanocavity with a design optimized for maximal quality factor, Q = 1.7 × 106. The cavity, fabricated from a silicon slab, has a resonant mode at λ = 1.59 μm and a measured Q-factor of 400 000. It displays nonlinear effects, including high-contrast optical bistability, at a threshold power among the lowest ever reported for a silicon device. With a theoretical modal volume as small as V = 0.34(λ/n)3, this cavity ranks among… 

Figures from this paper

Photonic crystal slab cavity simultaneously optimized for ultra-high Q/V and vertical radiation coupling
We present a design for a two-dimensional photonic crystal slab cavity in which the electric field localization is due to an extra hole in the lattice, as opposed to the more standard procedure of
Monolithic Silicon-Based Nanobeam Cavities for Integrated Nonlinear and Quantum Photonics
Photonic resonators allowing to confine the electromagnetic field in ultra-small volumes and with long decay times are crucial to a number of applications requiring enhanced nonlinear effects. For
Gallium nitride L3 photonic crystal cavities with an average quality factor of 16 900 in the near infrared
Photonic crystal point-defect cavities were fabricated in a GaN free-standing photonic crystal slab. The cavities are based on the popular L3 design, which was optimized using an automated process
Photonic crystal nanocavity with a Q factor exceeding eleven million.
TLDR
Repeated thermal oxidation and an oxide removal process applied after the removal of the buried oxide layer underneath the nanocavities realized an experimental Q factor greater than eleven million, which is the highest experimental Q ever recorded.
Wide-band slow light in compact photonic crystal coupled-cavity waveguides
Slow light has a variety of applications, in particular for enhanced nonlinear effects like four-wave mixing and high-harmonic generation. Here, we propose a photonic crystal coupled-cavity waveguide
Efficient continuous-wave nonlinear frequency conversion in high-Q gallium nitride photonic crystal cavities on silicon
We report on nonlinear frequency conversion from the telecom range via second harmonic generation (SHG) and third harmonic generation (THG) in suspended gallium nitride slab photonic crystal (PhC)
Maximizing the quality factor to mode volume ratio for ultra-small photonic crystal cavities
Small manufacturing-tolerant photonic crystal cavities are systematically designed using topology optimization to enhance the ratio between the quality factor and mode volume, Q / V. For relaxed
Nonlinear silicon photonics
Silicon photonics is a technology based on fabricating integrated optical circuits by using the same paradigms of the dominating electronics industry. After twenty years of impetuous development,
Numerical study and optimization of photonic crystals
Photonic crystals (PhCs) are engineered nanostructures that enable an extraordinary control over the flow of light. These structures can be fabricated out of common semiconductors, are compatible
Experimental demonstration of analog signal transmission in a silicon photonic crystal L3 resonator.
TLDR
The impacts of geometric parameters of the cavity structure (lattice constant, radius of holes, shift of the hole) on the analog signal transmission are analyzed, showing favorable analog link performance with relatively large fabrication tolerance to design parameters.
...
...

References

SHOWING 1-10 OF 38 REFERENCES
Fine-tuned high-Q photonic-crystal nanocavity.
TLDR
A photonic nanocavity with a high Q factor of 100,000 and a modal volume V of 0.71 cubic wavelengths, is demonstrated and a point-defect cavity in a two-dimensional (2D) photonic crystal (PC) slab is improved where the arrangement of six air holes near the cavity edges is fine-tuned.
High-Q photonic nanocavity in a two-dimensional photonic crystal
TLDR
A silicon-based two-dimensional photonic-crystal slab is used to fabricate a nanocavity with Q = 45,000 and V = 7.0 × 10-14 cm3; the value of Q/V is 10–100 times larger than in previous studies, underlying the realization that light should be confined gently in order to be confined strongly.
Nonlinear response of silicon photonic crystal microresonators excited via an integrated waveguide and fiber taper.
TLDR
A technique is demonstrated which efficiently transfers light between a tapered standard single-mode optical fiber and a high-Q, ultra-small mode volume, silicon photonic crystal resonant cavity, using this efficient cavity input and output channel to study the steady-state nonlinear absorption and dispersion of the photonics crystal cavity.
Ultralow Power Nonlinear Response in an Si Photonic Crystal Nanocavity
Optical nonlinear response and bistability behavior are observed in a fabricated silicon photonic crystal three defect-long (L3) nanocavity. The L3 cavity, which is coupled with a photonic crystal
Investigation of optical nonlinearities in an ultra-high-Q Si nanocavity in a two-dimensional photonic crystal slab.
TLDR
It is confirmed that low-power nonlinear optical effects could be attributed to the ultra-high Q factor of the nanocavity, and this nonlinearity could be explained by coupled-mode theory.
Single point defect photonic crystal nanocavity with ultrahigh quality factor achieved by using hexapole mode
Photonic crystal (PhC) nanocavities with an extremely high quality factor (Q) based on a point defect are fabricated and their properties are studied. Their confinement of light is based on
High-Q design of semiconductor-based ultrasmall photonic crystal nanocavity.
TLDR
A high-Q design for a semiconductor-based two-dimensional zero-cell photonic crystal (PhC) nanocavity with a small mode volume is reported, showing that the optimization of air hole displacements in both the in-plane x and y directions reduced FT components in the leaky region along the k(x) and k(y) axes.
High quality factor photonic crystal nanobeam cavities
We investigate the design, fabrication, and experimental characterization of high quality factor photonic crystal nanobeam cavities in silicon. Using a five-hole tapered one-dimensional photonic
Ultra-high-Q photonic double-heterostructure nanocavity
High-quality factor (Q) photonic nanocavities that strongly confine photons in volumes of optical-wavelength dimension are attracting much attention in various fields, including photonics1,2,3,4,5,
Laser characteristics with ultimate-small modal volume in photonic crystal slab point-shift nanolasers
We recently reported the laser operation of a nanocavity consisting only of a shift in two of the lattice points in a GaInAsP photonic crystal slab. In this study, we investigated the laser
...
...