163 citations · 1.1k across the 22 of their papers we have counts for
23 papers
Laser-guided lightning
Aurélien Houard, Pierre Walch, Thomas Produit +25
Electric currents circulating between charged clouds and the earth surface during lightning discharges are responsible for considerable damages and casualties. It is therefore impo…
Multiple-Photon Resonance Enabled Quantum Interference in Emission Spectroscopy of N_2^+
Xiang Zhang, Qi Lu, Yalei Zhu +13
Quantum interference occurs frequently in the interaction of laser radiation with materials, leading to a series of fascinating effects such as lasing without inversion, electromag…
Giant Rydberg excitons in CuO probed by photoluminescence excitation spectroscopy
Marijn A. M. Versteegh, Stephan Steinhauer, Josip Bajo +7
Rydberg excitons are, with their ultrastrong mutual interactions, giant optical nonlinearities, and very high sensitivity to external fields, promising for applications in quantum…
Quantum erasing of laser emission in N
Rostyslav Danylo, Guillaume Lambert, Yi Liu +3
Cavity-free lasing of N induced by a femtosecond laser pulse at 800~nm is nearly totally suppressed by a delayed twin pump pulse. We explain this surprising effect within the…
Theory of femtosecond strong field ion excitation and subsequent lasing in N
Vladimir T. Tikhonchuk, Yi Liu, Rostyslav Danylo +2
Delayed cavity-free forward lasing at the wavelengths of 391 and 428 nm was observed in recent experiments in air or pure nitrogen pumped with an intense femtosecond laser pulse at…
HV discharges triggered by dual- and triple-frequency laser filaments
Thomas Produit, Pierre Walch, Guillaume Schimmel +10
We study the use of frequency upconversion schemes of near-IR picosecond laser pulses and compare their ability to guide and trigger electric discharges through filamentation in ai…
CuO Microcrystals Grown on Silicon as Platform for Quantum-Degenerate Excitons and Rydberg States
Stephan Steinhauer, Marijn A. M. Versteegh, André Mysyrowicz +2
Cuprous oxide (CuO) is a semiconductor with large exciton binding energy and significant technological importance in applications such as photovoltaics and solar water splittin…
Lasing without population inversion in air
André Mysyrowicz, Rostyslav Danylo, Pengji Ding +8
A cavity-free laser in the sky could lead to revolutionary improvements in optical remote sensing for atmospheric science. Abundant in air, nitrogen molecules are prime candidates…
Backward lasing of singly ionized nitrogen ions pumped by femtosecond laser pulses
Xiang Zhang, Rostyslav Danylo, Zhengquan Fan +6
We report on the observation of backward lasing at 391.4 nm of nitrogen ions pumped by linearly polarized intense femtosecond pulses at 800 nm. The strongly enhanced spectral inten…
Plasma dynamics of a laser filamentation-guided spark
Guillaume Point, Leonid Arantchouk, Jérôme Carbonnel +2
We investigate experimentally the plasma dynamics of a centimeter-scale, laser filamentation-guided spark discharge. Using electrical and optical diagnostics to study monopolar dis…
Underwater acoustic wave generation by filamentation of terawatt ultrashort laser pulses
Vytautas Jukna, Amelie Jarnac, Carles Milián +9
Acoustic signals generated by filamentation of ultrashort TW laser pulses in water are characterized experimentally. Measurements reveal a strong influence of input pulse duration…
Recollision induced superradiance of ionized nitrogen molecules
Yi Liu, Pengji Ding, Guillaume Lambert +3
We propose a new mechanism to explain the origin of optical gain in the transitions between excited and ground state of the ionized nitrogen molecule following irradiation of neutr…
Energy deposition from focused terawatt laser pulses in air undergoing multifilamentation
Guillaume Point, Emmanuelle Thouin, André Mysyrowicz +1
Laser filamentation is responsible for the deposition of a significant part of the laser pulse energy in the propagation medium. We found that using terawatt laser pulses and relat…
Laser beam self-symmetrization in air in the multifilamentation regime
Carles Milian, Vytautas Jukna, Arnaud Couairon +6
We show experimental and numerical evidence of spontaneous self-symmetrization of focused laser beams experiencing multi-filamentation in air. The symmetrization effect is observed…
Generation of long-lived underdense channels using femtosecond filamentation in air
Guillaume Point, Carles Milián, Arnaud Couairon +2
Using femtosecond laser pulses at 800 and 400 nm, we characterize the formation of underdense channels in air generated by laser filamentation at the millijoule energy level by mea…
Two-color interferometer for the study of laser filamentation triggered electric discharges in air
Guillaume Point, Yohann Brelet, Leonid Arantchouk +4
We present a space and time resolved interferometric plasma diagnostic for use on plasmas where neutral-bound electron contribution to the refractive index cannot be neglected. By…
Superfilamentation in air
Guillaume Point, Yohann Brelet, Aurélien Houard +6
The interaction between a large number of laser filaments brought together using weak external focusing leads to the emergence of few filamentary structures reminiscent of standard…
Externally seeded backward lasing radiation from femtosecond laser filament in nitrogen gas
Pengji Ding, Sergey Mitryukovskiy, Aurélien Houard +3
Recently, S. Mitryukovskiy et al. presented experimental evidence showing that backward stimulated radiation at 337 nm can be obtained from plasma filaments in nitrogen gas pumped…
Effect of input pulse chirp on nonlinear energy deposition and plasma excitation in water
C. Milián, A. Jarnac, Y. Brelet +4
We analyze numerically and experimentally the effect of the input pulse chirp on the nonlinear energy deposition from J fs-pulses at nm to water. Numerical results are…
Backward stimulated radiation from filaments in Nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses
Sergey Mitryukovskiy, Yi Liu, Pengji Ding +2
We report on strong backward stimulated emission at 337 nm in Nitrogen gas pumped by circularly polarized femtosecond laser pulses at 800 nm. A distinct dependence of the backward…
Lasing of ambient air with microjoule pulse energy pumped by a multi terawatt IR femtosecond laser
Guillaume Point, Yi Liu, Yohann Brelet +4
We report on the lasing action of atmospheric air pumped by an 800 nm femtosecond laser pulse with peak power up to 4 TW. Lasing emission at 428 nm increases rapidly over a small r…
Self-seeded lasing in ionized air pumped by 800 nm femtosecond laser pulses
Yi Liu, Yohann Brelet, Guillaume Point +2
We report on the lasing in air and pure nitrogen gas pumped by a single 800 nm femtosecond laser pulse. Depending on gas pressure, incident laser power and beam convergence, differ…
The Yellow Excitonic Series of Cu2O Revisited by Lyman Spectroscopy
Takeshi Tayagaki, Andre Mysyrowicz, Makoto Kuwata-Gonokami
We report on the observation of the yellow exciton Lyman series up to the fourth term in Cu2O by time-resolved mid-infrared spectroscopy. The dependence of the oscillator strength…