Upconversion time-stretch infrared spectroscopy

K Hashimoto, T Nakamura, T Kageyama… - Light: Science & …, 2023 - nature.com
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 …

A bio-inspired and switchable H+/OH− ion-channel for room temperature exhaled CO 2 chemiresistive sensing

H Chen, R Lu, Y Gao, X Yue, H Yang, H Li… - Journal of Materials …, 2023 - pubs.rsc.org
Inspired by the CO2-induced reversible activation mechanism of the slow anion channel 1
(SLAC1) in plant stomatal guard cells during plant photosynthesis, we designed and …

High-sensitivity dual-comb and cross-comb spectroscopy across the infrared using a widely tunable and free-running optical parametric oscillator

CP Bauer, ZA Bejm, MK Bollier, J Pupeikis… - Nature …, 2024 - nature.com
Dual-comb spectroscopy (DCS) enables high-resolution measurements at high speeds
without the trade-off between resolution and update rate inherent to mechanical delay …

Broadband Up‐Conversion Mid‐Infrared Time‐Stretch Spectroscopy

Z Wen, B Peng, M Yan, T Zheng, Q Wen… - Laser & Photonics …, 2024 - Wiley Online Library
Time‐stretch spectroscopy is a powerful tool for studying transient and nonrepetitive
physical events. Its extension to the fundamental molecular fingerprint region is promising …

[HTML][HTML] Propagation of broadband mid-infrared optical pulses in atmosphere

C Hensel, L Vamos, I Tyulnev, U Elu, J Biegert - APL Photonics, 2024 - pubs.aip.org
We study and describe the reshaping of ultrashort and broadband mid-IR optical pulses in
an ambient atmosphere. While all pulse propagation undergoes dispersion and absorption …

Dual-Mode Comb Plasmonic Optical Fiber Sensing

E Villatoro, M Loyez, J Villatoro, C Caucheteur… - ACS …, 2024 - ACS Publications
Surface plasmon (SP) excitation in metal-coated tilted fiber Bragg gratings (TFBGs) has
been a focal point for highly sensitive surface biosensing. Previous efforts focused on …

A multi-harmonic NIR-UV dual-comb spectrometer

KF Chang, D Lesko, C Mashburn, P Chang… - arXiv preprint arXiv …, 2023 - arxiv.org
Dual-comb spectroscopy in the ultraviolet (UV) and visible would enable broad bandwidth
electronic spectroscopy with unprecedented frequency resolution. However, there are …

Broadband spectroscopy and interferometry with undetected photons at strong parametric amplification

K Hashimoto, DB Horoshko… - Advanced Quantum …, 2023 - Wiley Online Library
Nonlinear interferometry with entangled photons allows for characterizing a sample without
detecting the photons interacting with it. This method enables highly sensitive optical …

Broadband sum-frequency conversion of multiline Q-switched CO laser emission under its double-pass through uncoated ZnGeP2 crystal

IO Kinyaevskiy, YM Klimachev, MV Ionin… - Infrared Physics & …, 2023 - Elsevier
Broadband sum-frequency conversion of multiline Q-switched CO laser emission in a single
uncoated ZnGeP 2 crystal was experimentally studied by application of single-pass and …

CO2-induced switching between MOF-based bio-mimic slow anion channel and proton pump for medical exhalation detection

H Chen, X Yue, Y Fan, B Zheng, S Lv, F Wang… - Chemical Engineering …, 2024 - Elsevier
Inspired by the activation mechanism of slow anion channels (SLAC1) in plants that proton
pump reversibly induces plant stomata open for CO 2 adsorption, a CO 2-switching H+ …