Recent advances in ultrafast-laser-based spectroscopy and imaging for reacting plasmas and flames

AK Patnaik, I Adamovich, JR Gord… - Plasma Sources Science …, 2017 - iopscience.iop.org
Reacting flows and plasmas are prevalent in a wide array of systems involving defense,
commercial, space, energy, medical, and consumer products. Understanding the complex …

Photon retention in coherently excited nitrogen ions

J Yao, L Wang, J Chen, Y Wan, Z Zhang, F Zhang… - Science Bulletin, 2021 - Elsevier
Quantum coherence in quantum optics is an essential part of optical information processing
and light manipulation. Alkali metal vapors, despite the numerous shortcomings, are …

Temporal coherent control of superfluorescent pulses

GO Ariunbold, VA Sautenkov, MO Scully - Optics Letters, 2012 - opg.optica.org
We demonstrate that collective atomic interferences can be investigated by measuring the
superfluorescence (SF) time delay. A pair of broadband (≈ 20?? nm), ultrashort (≈ 80?? fs) …

Saturation of vibrational coherent anti-Stokes Raman scattering mediated by saturation of the rotational Raman transition

AK Patnaik, S Roy, JR Gord - Physical Review A—Atomic, Molecular, and …, 2013 - APS
Saturation of vibrational Raman coherence and coherent anti-Stokes Raman scattering
(CARS) using femtosecond (fs) excitation pulses is investigated theoretically. The pump in a …

Ultrafast saturation of resonant optical processes

AK Patnaik, S Roy, JR Gord - Physical Review A, 2014 - APS
A generalized formulation is presented for determining the saturation thresholds for optical
processes excited by ultrafast pulses based on the pulse area of the excitation pulse. It is …

Ultrafast diagnostics of reacting flows and plasmas

AK Patnaik, HU Stauffer, PS Hsu, N Jiang… - AIP Conference …, 2019 - pubs.aip.org
Optical measurement techniques have become powerful tools for the detailed study of the
chemistry and physics of reacting flows, and plasmas. Traditional combustion diagnostics …

Molecular vibrational dynamics in ethanol studied by femtosecond CARS

Y Zhao, S Zhang, Z Zhang, Z Dong, D Chen… - Optics …, 2015 - Elsevier
Femtosecond time-resolved coherent anti-Stokes Raman spectroscopy (CARS) is utilized to
study the ultrafast vibrational dynamics in ethanol at room temperature. The beat …

Ultralow-power local laser control of the dimer density in alkali-metal vapors through photodesorption

PK Jha, KE Dorfman, Z Yi, L Yuan… - Applied Physics …, 2012 - pubs.aip.org
Ultralow-power diode-laser radiation is employed to induce photodesorption of cesium from
a partially transparent thin-film cesium adsorbate on a solid surface. Using resonant Raman …

Ultrafast saturation of electronic-resonance-enhanced coherent anti-Stokes Raman scattering and comparison for pulse durations in the nanosecond to femtosecond …

AK Patnaik, S Roy, JR Gord - Physical Review A, 2016 - APS
The saturation threshold of a probe pulse in an ultrafast electronic-resonance-enhanced
(ERE) coherent anti-Stokes Raman spectroscopy (CARS) configuration is calculated. We …

Tracking molecular wave packets in cesium dimers by coherent Raman scattering

L Yuan, D Pestov, RK Murawski, GO Ariunbold… - Physical Review A …, 2012 - APS
We explore wave-packet dynamics in the ground X 1 Σ g+ and excited B 1 Π u states of
cesium dimers (Cs 2). In particular, we study the dependence of the wave-packet dynamics …