Soliton Microcomb Generation in a III-V Photonic Crystal Cavity
arXiv:2304.12968 · doi:10.1364/OPTICA.530247
Abstract
Photonic crystals, material structures in which the dielectric function varies periodically in one, two, or three dimensions, can provide exquisite control over the propagation and confinement of light. By tailoring their band structure, exceptional optical effects can be achieved, such as slow light propagation or, through the creation of photonic bandgaps, optical cavities with both a high quality factor and a small mode volume. Photonic crystal cavities have been used to realize compact nano-lasers and achieve strong coupling to quantum emitters, such as semiconductor quantum dots, color centers, or cold atoms. A useful attribute of photonic crystals is the ability to create chirped mirrors. Chirping has underpinned advances in ultra-fast lasers based on bulk mirrors, but has yet to be fully exploited in integrated photonics, where it could provide a means to engineer otherwise unattainable dispersion profiles for a range of nonlinear optical applications, including soliton frequency comb generation. The vast majority of integrated resonators for frequency combs make use of microring geometries, where only waveguide width and height are varied to engineer dispersion. Generation of frequency combs has been demonstrated with one-dimensional photonic crystal cavities made of silicon nitride, but the low index contrast prevents formation of broad soliton combs. We overcome these challenges by using a photonic-crystal Fabry-Pérot resonator made of gallium phosphide, a material with a high refractive index and a Kerr nonlinearity 200 times larger than that of silicon nitride. We employ chirped photonic crystal mirrors to provide anomalous dispersion. With subharmonic pulsed pumping at an average power of 23.6 mW, we are able to access stable dissipative Kerr frequency combs. We demonstrate soliton formation with a 3-dB bandwidth of 3.0 THz, corresponding to a pulse duration of 60 fs.
arXiv comment22 pages, 16 figures
References in corpus (33)
- Temporal solitons in optical microresonators
- Parallel convolution processing using an integrated photonic tensor core
- Microresonator solitons for massively parallel coherent optical communications
- Microresonator Soliton Dual-Comb Spectroscopy
- Mode interaction aided excitation of dark solitons in microresonators constructed of normal dispersion waveguides
- Massively parallel coherent laser ranging using soliton microcombs
- Quantum many-body models with cold atoms coupled to photonic crystals
- Universal dynamics and controlled switching of dissipative Kerr solitons in optical microresonators
- Nanophotonic soliton-based microwave synthesizers
- Stability Analysis of the Lugiato-Lefever Model for Kerr Optical Frequency Combs. Part I: Case of Normal Dispersion
- Atom-Light Interactions in Photonic Crystals
- Integrated gallium phosphide nonlinear photonics
- Photon-mediated interactions between quantum emitters in a diamond nanocavity
- Searching for Exoplanets Using a Microresonator Astrocomb
- μW-Level Microresonator Solitons with Extended Stability Range Using an Auxiliary Laser
- High-order coherent communications using mode-locked dark-pulse Kerr combs from microresonators
- Mode-locked ultrashort pulse generation from on-chip normal dispersion microresonators
- Second harmonic generation in gallium phosphide photonic crystal nanocavities with ultralow continuous wave pump power
- Ultralow-Noise Photonic Microwave Synthesis using a Soliton Microcomb-based Transfer Oscillator
- Dual chirped micro-comb based parallel ranging at megapixel-line rates
- Tailoring microcombs with inverse-designed, meta-dispersion microresonators
- Generation of a coherent near-infrared Kerr frequency comb in a monolithic microresonator with normal GVD
- A continuum of bright and dark pulse states in a photonic-crystal resonator
- Dissipative Kerr Solitons in a III-V Microresonator
- Gallium Phosphide Photonic Crystal Nanocavities in the Visible
- Gallium phosphide-on-silicon dioxide photonic devices
- Microwave-to-optical conversion with a gallium phosphide photonic crystal cavity
- Soliton Pulses in Photonic Crystal Fabry-Perot Microresonators
- Optomechanics with one-dimensional gallium phosphide photonic crystal cavities
- Dispersion-less Kerr solitons in spectrally confined optical cavities
- Microresonator Soliton Frequency Combs in the Zero-Dispersion Regime
- Highly selective dry etching of GaP in the presence of AlGaP
- Mid-infrared frequency combs and staggered spectral patterns in microresonators