900 citations · 2.1k across the 29 of their papers we have counts for
29 papers
Photonic chip-based low noise microwave oscillator
Igor Kudelin, William Groman, Qing-Xin Ji +26
Numerous modern technologies are reliant on the low-phase noise and exquisite timing stability of microwave signals. Substantial progress has been made in the field of microwave ph…
Thermal-noise-limited, compact optical reference cavity operated without a vacuum enclosure
Yifan Liu, Charles A. McLemore, Megan Kelleher +7
We present an in-vacuum bonded, 9.7 mL-volume Fabry-Pérot ultrastable optical reference cavity that operates without a vacuum enclosure. A laser stabilized to the cavity demonstrat…
Advanced Distributed Submarine Cable Monitoring and Environmental Sensing using Constant Power Probe Signals and Coherent Detection
Mikael Mazur, Nicolas K. Fontaine, Megan Kelleher +6
In this work we demonstrate an FPGA-based coherent optical frequency domain reflectometry setup for cable monitoring. Using coherent detection for averaging and narrowband filterin…
The photodetection of ultrashort optical pulse trains for low noise microwave signal generation
Franklyn Quinlan
Electrical signals derived from optical sources have achieved record-low levels of phase noise, and have demonstrated the highest frequency stability yet achieved in the microwave…
Compact, Portable, Thermal-Noise-Limited Optical Cavity with Low Acceleration Sensitivity
Megan Lauree Kelleher, Charles A. McLemore, Dahyeon Lee +3
We develop and demonstrate a compact (less than mL) portable Fabry-Pérot optical reference cavity. A laser locked to the cavity is thermal noise limited at fr…
Chip-Based Laser with 1 Hertz Integrated Linewidth
Joel Guo, Charles A. McLemore, Chao Xiang +14
Lasers with hertz-level linewidths on timescales up to seconds are critical for precision metrology, timekeeping, and manipulation of quantum systems. Such frequency stability typi…
Thermal noise-limited laser stabilization to an 8 mL volume Fabry-Pérot reference cavity with microfabricated mirrors
Charles A. McLemore, Naijun Jin, Megan L. Kelleher +7
Lasers stabilized to vacuum-gap Fabry-Pérot optical reference cavities display extraordinarily low noise and high stability, with linewidths much less than 1 Hz. These lasers can e…
Micro-fabricated mirrors with finesse exceeding one million
Naijun Jin, Charles A. McLemore, David Mason +7
The Fabry-Pérot resonator is one of the most widely used optical devices, enabling scientific and technological breakthroughs in diverse fields including cavity QED, optical clocks…
Thermal-light heterodyne spectroscopy with frequency comb calibration
Connor Fredrick, Freja Olsen, Ryan Terrien +3
Precision laser spectroscopy is key to many developments in atomic and molecular physics and the advancement of related technologies such as atomic clocks and sensors. However, in…
Optical Frequency Comb Calibrated Near Infrared Solar Heterodyne Spectroscopy
Connor Fredrick, Freja Olsen, Ryan Terrien +3
We perform heterodyne spectroscopy at 1.56 micron with a tunable laser and thermal radiation from the Sun. The laser tuning is calibrated with a frequency comb, providing a simple…
Control and readout of a superconducting qubit using a photonic link
F. Lecocq, F. Quinlan, K. Cicak +3
Delivering on the revolutionary promise of a universal quantum computer will require processors with millions of quantum bits (qubits). In superconducting quantum processors, each…
Coherent Optical Clock Down-Conversion for Microwave Frequencies with 10-18 Instability
Takuma Nakamura, Josue Davila-Rodriguez, Holly Leopardi +12
Optical atomic clocks are poised to redefine the SI second, thanks to stability and accuracy more than one hundred times better than the current microwave atomic clock standard. Ho…
Stellar Spectroscopy in the Near-infrared with a Laser Frequency Comb
Andrew J. Metcalf, Tyler Anderson, Chad F. Bender +34
The discovery and characterization of exoplanets around nearby stars is driven by profound scientific questions about the uniqueness of Earth and our Solar System, and the conditio…
Optimizing the linearity in high-speed photodiodes
J. Davila-Rodriguez, X. Xie, J. Zang +7
Analog photonic links require high-fidelity, high-speed optical-to-electrical conversion for applications such as radio-over-fiber, synchronization at kilometer-scale facilities, a…
An ultrafast electro-optic light source with sub-cycle precision
David R. Carlson, Daniel D. Hickstein, Wei Zhang +4
Controlling femtosecond optical pulses with temporal precision better than one cycle of the carrier field has a profound impact on measuring and manipulating interactions between l…
A compact, thermal noise limited reference cavity for ultra-low noise microwave generation
J. Davila-Rodriguez, F. N. Baynes, A. D. Ludlow +4
We demonstrate an easy to manufacture, 25 mm long ultra-stable optical reference cavity for transportable photonic microwave generation systems. Employing a rigid holding geometry…
Single-branch Er:fiber frequency comb for optical synthesis at the level
Holly Leopardi, Josue Davila-Rodriguez, Franklyn Quinlan +3
Laser frequency combs based on erbium-doped fiber mode-locked lasers have shown great potential for compact, robust and efficient optical clock comparisons. However, to simultaneou…
Microresonator Brillouin Laser Stabilization Using a Microfabricated Rubidium Cell
William Loh, Matthew T. Hummon, Holly F. Leopardi +5
We frequency stabilize the output of a miniature stimulated Brillouin scattering (SBS) laser to rubidium atoms in a microfabricated cell to realize a laser system with frequency st…
Dual-microcavity narrow-linewidth Brillouin laser
William Loh, Adam Green, Frederick Baynes +6
Ultralow noise, yet tunable lasers are a revolutionary tool in precision spectroscopy, displacement measurements at the standard quantum limit, and the development of advanced opti…
Attosecond Timing in Optical-to-Electrical Conversion
Fred N. Baynes, Franklyn Quinlan, Tara Fortier +4
The most frequency-stable sources of electromagnetic radiation are produced optically, and optical frequency combs provide the means for high fidelity frequency transfer across hun…
Optical amplification and pulse interleaving for low noise photonic microwave generation
Franklyn Quinlan, Fred N. Baynes, Tara M. Fortier +4
We investigate the impact of pulse interleaving and optical amplification on the spectral purity of microwave signals generated by photodetecting the pulsed output of an Er:fiber-b…
A microresonator frequency comb optical clock
Scott B. Papp, Katja Beha, Pascal DelHaye +4
Optical-frequency combs enable measurement precision at the 20th digit, and accuracy entirely commensurate with their reference oscillator. A new direction in experiments is the cr…
A near infrared frequency comb for Y+J band astronomical spectroscopy
Steve Osterman, Gabriel G. Ycas, Scott A. Diddams +8
Radial velocity (RV) surveys supported by high precision wavelength references (notably ThAr lamps and I2 cells) have successfully identified hundreds of exoplanets; however, as th…
Demonstration of On-Sky Calibration of Astronomical Spectra using a 25 GHz near-IR Laser Frequency Comb
Gabriel G. Ycas, Franklyn Quinlan, Scott A. Diddams +8
We describe and characterize a 25 GHz laser frequency comb based on a cavity-filtered erbium fiber mode-locked laser. The comb provides a uniform array of optical frequencies spann…