Versatile tuning of Kerr soliton microcombs in crystalline microresonators

Abstract

Microresonator-based optical frequency combs emitted from high-quality-factor microresonators, also known as microcombs, have opened up new horizons to areas of optical frequency comb technology including frequency metrology, precision sensing, and optical communication. To extend the capability of microcombs for such applications, large and reliable tunability is of critical importance. Here, we show broad spectral tuning of Kerr soliton microcombs in a thermally controlled crystalline microresonator with pump-detuning stabilization. The fundamental elements composing frequency combs, namely the center frequency, repetition frequency, and carrier-envelope offset frequency, are spectrally tuned by up to -48.8 GHz, -5.85 MHz, and -386 MHz, respectively, leveraging thermal effects in ultrahigh-Q crystalline magnesium fluoride resonators. We further demonstrate a 3.4-fold enhancement of soliton comb power resulting from thermal expansion with a temperature change of only 28 K by employing quantitative analyses of the fiber-to-resonator coupling efficiency.

10 pages, 4 figures

References in corpus (6)

• Microresonator Soliton Dual-Comb Spectroscopy
• Probing 10 μK stability and residual drifts in the cross-polarized dual-mode stabilization of single-crystal ultrahigh-Q optical resonators
• Strong polarization mode coupling in microresonators
• Coupling ideality of integrated planar high-Q microresonators
• Dissipative Kerr soliton microcombs for FEC-free optical communications over 100 channels
• Directly pumped 10 GHz microcomb modules from low-power diode lasers

Cited by in corpus (14)

• Mechanically actuated Kerr soliton microcombs
• Non-hermitian topology in multiterminal superconducting junctions
• Fingerprints of anti-Pfaffian topological order in quantum point contact transport
• Universal scaling relations in electron-phonon superconductors
• Cavity Spectroscopy for Strongly Correlated Systems
• Systematic dispersion engineering of crystalline microresonators for broadband and coherent frequency comb generation
• Architecture for coherent dual-comb spectroscopy and low-noise photonic microwave generation using mechanically actuated soliton microcombs
• Chirally-protected state manipulation by tuning one-dimensional statistics
• Skyrmion Lattice Domain Formation in a Non-Flat Energy Landscape
• Sign competing sources of Berry curvature and anomalous Hall conductance humps in topological ferromagnets
• Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
• The light-matter correlation energy functional of the cavity-coupled two-dimensional electron gas via quantum Monte Carlo simulations
• Bose-Einstein condensate sub-wavelength confinement via superoscillations
• Centi-combs: Low-noise sub-GHz repetition-rate soliton frequency combs from crystalline resonators