Laser-based standoff detection of explosives: a critical review
S Wallin, A Pettersson, H Östmark, A Hobro - Analytical and bioanalytical …, 2009 - Springer
A review of standoff detection technologies for explosives has been made. The review is
focused on trace detection methods (methods aiming to detect traces from handling …
focused on trace detection methods (methods aiming to detect traces from handling …
High-brightness switchable multiwavelength remote laser in air
We demonstrate a harmonic-seeded switchable multiwavelength laser in air driven by
intense midinfrared femtosecond laser pulses, in which population inversion occurs at an …
intense midinfrared femtosecond laser pulses, in which population inversion occurs at an …
High-gain backward lasing in air
The compelling need for standoff detection of hazardous gases and vapor indicators of
explosives has motivated the development of a remotely pumped, high-gain air laser that …
explosives has motivated the development of a remotely pumped, high-gain air laser that …
Self-seeded lasing in ionized air pumped by 800 nm femtosecond laser pulses
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 …
femtosecond laser pulse. Depending on gas pressure, incident laser power and beam …
Standoff spectroscopy via remote generation of a backward-propagating laser beam
In an earlier publication we demonstrated that by using pairs of pulses of different colors (eg,
red and blue) it is possible to excite a dilute ensemble of molecules such that lasing and/or …
red and blue) it is possible to excite a dilute ensemble of molecules such that lasing and/or …
Backward stimulated radiation from filaments in nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses
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 …
circularly polarized femtosecond laser pulses at 800 nm. A distinct dependence of the …
Remote creation of coherent emissions in air with two-color ultrafast laser pulses
We experimentally demonstrate the generation of narrow-bandwidth emissions with
excellent coherent properties at∼ 391 and∼ 428 nm from N 2+(B 2 Σ u+(v'= 0)→ X 2 Σ …
excellent coherent properties at∼ 391 and∼ 428 nm from N 2+(B 2 Σ u+(v'= 0)→ X 2 Σ …
Air lasing: phenomena and mechanisms
H Li, D Yao, S Wang, Y Fu, H Xu - Chinese Physics B, 2019 - iopscience.iop.org
Air lasing is a concept that refers to remote no-cavity (mirrorless) optical amplification in
ambient air with the air constituents as the gain media. Due to the high potential of air lasing …
ambient air with the air constituents as the gain media. Due to the high potential of air lasing …
Single-shot stand-off chemical identification of powders using random Raman lasing
The task of identifying explosives, hazardous chemicals, and biological materials from a safe
distance is the subject we consider. Much of the prior work on stand-off spectroscopy using …
distance is the subject we consider. Much of the prior work on stand-off spectroscopy using …
Coherence brightened laser source for atmospheric remote sensing
AJ Traverso, R Sanchez-Gonzalez… - Proceedings of the …, 2012 - National Acad Sciences
We have studied coherent emission from ambient air and demonstrated efficient generation
of laser-like beams directed both forward and backward with respect to a nanosecond …
of laser-like beams directed both forward and backward with respect to a nanosecond …