Book Chapters
J. P. Donnelly, P. W. Juodawlkis, R. K. Huang, J. J. Plant, G. M. Smith, L. J. Missaggia, W. Loh, S. M. Redmond, B. Chann, M. K. Connors,
R. B. Swint, and G. W. Turner
"High-Power Slab-Coupled Optical Waveguide Lasers and Amplifiers"
Advances in Semiconductor Lasers, vol. 86, Semiconductors and Semimetals, Elsevier (2012)
Journal Publications
2025W. Loh, D. Gray, R. Maxson, D. Kharas, J. Plant, P. W. Juodawlkis, C. Sorace-Agaskar, and S. Yegnanarayanan
"Magic cancellation point for vibration resilient ultrastable microwave signal synthesis"
Nature Communications (2025)
W. Loh, D. Reens, D. Kharas, A. Sumant, C. Belanger, R. T. Maxson, A. Medeiros, W. Setzer, D. Gray, K. DeBry, C. D. Bruzewicz,
J. J. Plant, J. Liddell, G. N. West, S. Doshi, M. Roychowdhury, M. E. Kim, D. Braje, P. W. Juodawlkis, J. Chiaverini, and R. McConnell
"Optical atomic clock interrogation using an integrated spiral cavity laser"
Nature Photonics (2025)
2024
W. Loh, D. Gray, R. Irion, O. May, C. Belanger, J. J. Plant, P. W. Juodawlkis, and S. Yegnanarayanan
"Ultralow noisemicrowave synthesis via difference frequency division of a Brillouin resonator"
Optica 11, 4 (2024)
2023
W. Loh, R. T. Maxson, A. P. Medeiros, G. N. West, P. W. Juodawlkis, and R. McConnell
"Optical Frequency Averaging of Light"
Optics Express 31, 16 (2023)
2022
W. Loh, D. Kharas, R. Maxson, G. N. West, A. Medeiros, D. Braje, P. W. Juodawlkis, and R. McConnell
"Cooling of an integrated Brillouin laser below the thermal limit"
Optics Express 30, 13 (2022)
2021
P. W. Juodawlkis, W. Loh, and C. Sorace-Agaskar
"2022 Roadmap on integrated quantum photonics"
JPhys Photonics (2021)
2020
W. Loh, J. Stuart, D. Reens, C. D. Bruzewicz, D. Braje, J. Chiaverini, P. W. Juodawlkis, J. M. Sage, and R. McConnell
"Operation of an optical atomic clock with a Brillouin laser subsystem"
Nature 588 (2020)
D. Kharas, J. J. Plant, W. Loh, R. B. Swint, S. Bramhavar, C. Heidelberger, S. Yegnanarayanan, and P. W. Juodawlkis
"High-power (>300 mW) on-chip laser with passively aligned silicon-nitride waveguide DBR cavity"
IEEE Photonics Journal 12, 6 (2020)
G. N. West, W. Loh, D. Kharas, and R. J. Ram
"Impact of laser frequency noise on high-extinction optical modulation"
Optics Express 28, 26 (2020)
R. J. Niffenegger, J. Stuart, C. Sorace-Agaskar, D. Kharas, S. Bramhavar, C. D. Bruzewicz, W. Loh, R. T. Maxson, R. McConnell,
D. Reens, G. N. West, J. M. Sage, and J. Chiaverini
"Integrated multi-wavelength control of an ion qubit"
Nature 586 (2020)
W. Loh, S. Yegnanarayanan, R. Maxson, K. E. Kolodziej, B. perry, and P. W. Juodawlkis
"An amplitude stabilization technique for nonlinear optoelectronic filtering"
IEEE Photon. Technol. Lett. 32, 14 (2020)
2019
C. Sorace-Agaskar, D. Kharas, S. Yegnanarayanan, R. Maxson, G. N. West, W. Loh, S. Bramhavar, R. J. Ram, J. Chiaverini, J. M. Sage,
and P. W. Juodawlkis
"Low-loss integrated photonics for the blue and ultraviolet regime"
IEEE J. Sel. Top. Quantum Electron. 25, 5 (2019)
G. N. West, W. Loh, D. Kharas, C. Sorace-Agaskar, K. K. Mehta, J. Sage, J. Chiaverini, and R. J. Ram
"Low-loss integrated photonics for the blue and ultraviolet regime"
APL Photonics 4, 026101 (2019)
W. Loh, S. Yegnanarayanan, F. O'Donnell, and P. W. Juodawlkis
"Ultra-narrow linewidth Brillouin laser with nanokelvin temperature self-referencing"
Optica 6, 2 (2019)
2018
J. A. Sedlacek, J. Stuart, W. Loh, R. McConnell, C. D. Bruzewicz, J. M. Sage, and J. Chiaverini
"Method for determination of technical noise contributions to ion motional heating"
J. Appl. Phys. 124, 214904 (2018)
2017
W. Loh, S. Yegnanarayanan, K. E. Kolodziej, and P. W. Juodawlkis
"Optical unmasking of spectrally overlapping RF signals"
Optics Express 25, 22 (2017)
2016
W. Loh, M. T. Hummon, H. F. Leopardi, T. M. Fortier, F. Quinlan, J. Kitching S. B. Papp, and S. A. Diddams
"Rubidium-stabilized microresonator Brillouin laser"
Optics Express 24, 13 (2016)
2015
W. Loh, J. Becker, D. C. Cole, A. Coillet, F. N. Baynes, S. B. Papp, and S. A. Diddams
"A microrod-resonator Brillouin laser with 240 Hz absolute linewidth"
New Journal of Physics 18, 045001 (2016)
W. Loh, S. B. Papp, and S. A. Diddams
"Noise and dynamics of stimulated Brillouin scattering microresonator lasers"
Physical Review A 91, 053843 (2015)
W. Loh, A. A. S. Green, F. N. Baynes, D. C. Cole, F. J. Quinlan, H. Lee, K. J. Vahala, S. B. Papp, and S. A. Diddams
"Dual-microcavity narrow-linewidth Brillouin laser"
Optica 2, 3 2015
P. Del'Haye, A. Coillet, W. Loh, K. Beha, S. B. Papp, and S. A. Diddams
"Phase steps and resonator detuning measurements in microresonator frequency combs"
Nature Communications 6, 5668 (2015)
2014
W. Loh, P. Del'Haye, S. B. Papp, and S. A. Diddams
"Phase and coherence of optical microresonator frequency combs"
Physical Review A 89, 053810 (2014)
W. Loh, S. Yegnanarayanan, R. J. Ram, and P. W. Juodawlkis
"A nonlinear optoelectronic filter for electronic signal processing"
Nature Scientific Reports 4, 3613 (2014)
2013
W. Loh, S. Yegnanarayanan, R. J. Ram, and P. W. Juodawlkis
"Unified theory of oscillator phase noise II: flicker noise"
IEEE Transactions on Microwave Theory and Techniques 61, 4130 (2013)
W. Loh, S. Yegnanarayanan, R. J. Ram, and P. W. Juodawlkis
"Unified theory of oscillator phase noise I: white noise"
IEEE Transactions on Microwave Theory and Techniques 61, 2371 (2013)
2012
W. Loh, S. Yegnanarayanan, J. Klamkin, S. M. Madison, J. J. Plant, F. J. O'Donnell, and P. W. Juodawlkis
"Amplifier-free slab-coupled optical waveguide optoelectronic oscillator systems"
Optics Express 20, 19589 (2012)
W. Loh, S. Yegnanarayanan, J. J. Plant, F. J. O'Donnell, M. W. Grein, J. Klamkin, S. M. Madison, and P. W. Juodawlkis
"Low-noise RF-amplifier-free slab-coupled optical waveguide coupled optoelectronic oscillators: physics and
operation"
Optics Express 20, 19420 (2012)
W. Loh, S. Yegnanarayanan, R. J. Ram, and P. W. Juodawlkis
"Super-homogeneous saturation of microwave-photonic gain in optoelectronic oscillator systems"
IEEE Photonics Journal 4, 1256 (2012)
2011
P. W. Juodawlkis, J. J. Plant, W. Loh, L. J. Missaggia, F. J. O'Donnell, D. C. Oakley, A. Napoleone, J. Klamkin, J. T. Gopinath, D. J. Ripin,
S. Gee, P. J. Delfyett, and J. P. Donnelly
"High-power, low-noise 1.5-μm slab-coupled optical waveguide (SCOW) emitters: physics, devices, and applications"
IEEE Journal of Selected Topics in Quantum Electronics 17, 1698 (2011)
W. Loh, F. J. O'Donnell, J. J. Plant, M. A. Brattain, L. J. Missaggia, and P. W. Juodawlkis
"Packaged, high-power, narrow-linewidth slab-coupled optical waveguide external-cavity laser (SCOWECL)"
IEEE Photonics Technology Letters 23, 974 (2011)
W. Loh, J. J. Plant, J. Klamkin, J. P. Donnelly, F. J. O'Donnell, R. J. Ram, and P. W. Juodawlkis
"Noise figure of Watt-class ultralow-confinement semiconductor optical amplifiers"
IEEE Journal of Quantum Electronics 47, 66 (2011)
2010
J. Klamkin, R. K. Huang, J. J. Plant, M. K. Connors, L. J. Missaggia, W. Loh, G. M. Smith, K. G. Ray, F. J. O'Donnell, J. P. Donnelly, and
P. W. Juodawlkis
"Directly modulated narrowband slab-coupled optical waveguide laser"
Electronics Letters 46, 522 (2010)
2009
P. W. Juodawlkis, J. J. Plant, W. Loh, L. J. Missaggia, K. E. Jensen, and F. J. O'Donnell
"Packaged 1.5-μm quantum-well SOA with 0.8-W output power and 5.5-dB noise figure"
IEEE Photonics Technology Letters 21, 1208 (2009)
Patents
W. Loh, S. Yegnanarayanan, R. J. Ram, and P. W. Juodawlkis
"Optoelectronic Filter"
Patent WO2015017653 A1
Doctoral Thesis
Committee: Dr. Paul W. Juodawlkis, Prof. Rajeev J. Ram, Prof. Erich P. Ippen
The physics of phase-noise mitigation: signal generation and filtering using microwave-photonic links