activity
20182023
most citedCoherent Optical Clock Down-Conversion for Microwave Frequencies with 10-18 Instability

175 citations · 458 across the 10 of their papers we have counts for

collaborators

10 papers

physics.optics2023★ 9 cited

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…

physics.ins-det2023★ 1 cited

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…

astro-ph.SR2023★ 4 cited

Particle acceleration in solar flares with imaging-spectroscopy in soft X-rays

Mitsuo Oka, Amir Caspi, Bin Chen +15

Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. In the case of solar…

physics.optics2023★ 13 cited

Broadband coherent Raman scattering spectroscopy at 50,000,000 spectra/s

Takuma Nakamura, Kazuki Hashimoto, Takuro Ideguchi

Raman scattering spectroscopy is widely used as an analytical technique in various fields, but its measurement process tends to be slow due to the low scattering cross-section. In…

physics.optics2022★ 103 cited

Upconversion time-stretch infrared spectroscopy

Kazuki Hashimoto, Takuma Nakamura, Takahiro Kageyama +4

High-speed measurement confronts the extreme speed limit when the signal becomes comparable to the noise level. In the context of broadband mid-infrared spectroscopy, state-of-the-…

physics.space-ph2022★ 16 cited

On the origin of "patchy" energy conversion in electron diffusion regions

Kevin J. Genestreti, Xiaocan Li, Yi-Hsin Liu +9

During magnetic reconnection, field lines interconnect in electron diffusion regions (EDRs). In some EDRs the reconnection and energy conversion rates are controlled by a steady ou…

physics.optics2021★ 25 cited

A simple approach of broadband mid-infrared pulse generation with a mode-locked Yb-doped fiber laser

Takuma Nakamura, Venkata Ramaiah Badarla, Kazuki Hashimoto +2

Broadband mid-infrared (MIR) molecular spectroscopy demands a bright and broadband light source in the molecular fingerprint region. To this end, intra-pulse difference frequency g…

physics.optics2020★ 175 cited

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…

astro-ph.EP2019★ 27 cited

Modeling Kelvin-Helmholtz instability-driven turbulence with hybrid simulations of Alfvénic turbulence

Luca Franci, Julia E. Stawarz, Emanuele Papini +9

Magnetospheric Multiscale (MMS) observations of plasma turbulence generated by a Kelvin-Helmholtz (KH) event at the Earth's magnetopause are compared with a high-resolution two-dim…

physics.space-ph2018★ 85 cited

How accurately can we measure the reconnection rate for the MMS diffusion region event of 2017-07-11?

Kevin J. Genestreti, Takuma Nakamura, Rumi Nakamura +8

We investigate the accuracy with which the reconnection electric field can be determined from in-situ plasma data. We study the magnetotail electron diffusion region observed…