Ultraprecise optical-frequency stabilization with heterogeneous III-V/Si lasers

Abstract

Demand for low-noise, continuous-wave, frequency-tunable lasers based on semiconductor integrated photonics has been advancing in support of numerous applications. In particular, an important goal is to achieve narrow spectral linewidth, commensurate with bulk-optic or fiber-optic laser platforms. Here, we report on laser-frequency-stabilization experiments with a heterogeneously integrated III/V-Si widely tunable laser and a high-finesse, thermal-noise-limited photonic resonator. This hybrid architecture offers a chip-scale optical-frequency reference with an integrated linewidth of 60 Hz and a fractional frequency stability of 2.5e-13 at 1-second integration time. We explore the potential for stabilization with respect to a resonator with lower thermal noise by characterizing laser-noise contributions such as residual amplitude modulation and photodetection noise. Widely tunable, compact and integrated, cost effective, stable and narrow linewidth lasers are envisioned for use in various fields, including communication, spectroscopy, and metrology.

References in corpus (12)

• Enhanced sensitivity operation of an optical gyroscope near an exceptional point
• Sub-Hz Linewidth Photonic-Integrated Brillouin Laser
• Integrated Waveguide Brillouin Laser
• Brillouin Lasing with a CaF_2 Whispering Gallery Mode Resonator
• 8E-17 fractional laser frequency instability with a long room-temperature cavity
• Chasing the thermodynamical noise limit in whispering-gallery-mode resonators for ultrastable laser frequency stabilization
• Nano-Kelvin thermometry and temperature control: beyond the thermal noise limit
• A Kerr-microresonator optical clockwork
• A compact, thermal noise limited reference cavity for ultra-low noise microwave generation
• A microrod-resonator Brillouin laser with 240 Hz absolute linewidth
• Frequency stability of a dual-mode whispering gallery mode optical reference cavity
• A microrod optical-frequency reference in the ambient environment

Cited by in corpus (5)

• Hybrid integrated low noise linearly chirped Frequency Modulated Continuous Wave laser source based on self-injection to external cavity
• Hybrid InP and SiN integration of an octave-spanning frequency comb
• Palm-sized, vibration-insensitive and vacuum-free all-fiber-photonic module for 10-14-level stabilization of CW lasers and frequency combs
• Long-term absolute frequency stabilization of a hybrid-integrated InP-Si3N4 diode laser
• 10${}^{-15}$-level laser stabilization down to fiber thermal noise limit using self-homodyne detection