Stimulated Emission in the Band Spectrum of Nitrogen

Mathias, L.E.S.; Parker, J. T.

doi:10.1063/1.1723557

Cited by 98 publications

(9 citation statements)

References 2 publications

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“…Lasing from molecular nitrogen was observed for the first time in the early 1960s, at the dawn of the laser era [1,2]. Today the discharge-pumped nitrogen laser, operating in a broad range of gas pressures, from several millibars to the atmospheric pressure, and repetition rates from several hertz to several kilohertz, is a cheap and robust source of high-power near-UV radiation.…”

Section: Introductionmentioning

confidence: 99%

Free-space nitrogen gas laser driven by a femtosecond filament

et al. 2012

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We report an experimental proof and full characterization of laser generation in molecular nitrogen in an argon-nitrogen gas mixture remotely excited at a distance above 2 m in a femtosecond laser filament. Filamentation experiments performed with near-infrared, 1-μm-wavelength and midinfrared, 4-μm-wavelength short-pulse laser sources show that mid-IR laser pulses enable radical enhancement of filamentation-assisted lasing by N 2 molecules. Energies as high as 3.5 μJ are achieved for the 337-and 357-nm laser pulses generated through the second-positive-band transitions of N 2 , corresponding to a 0.5% total conversion efficiency from midinfrared laser energy to the energy of UV lasing.

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Section: Introductionmentioning

confidence: 99%

Free-space nitrogen gas laser driven by a femtosecond filament

et al. 2012

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“…Lasing from molecular nitrogen was observed for the first time in the early 60s, at the dawn of the laser era [1,2]. Today the discharge-pumped nitrogen lasers, operating in a broad range of gas pressures, from several millibars to the atmospheric pressure, and repetition rates, from several Hz to several kHz, are cheap and robust sources of high power near-UV radiation.…”

Section: Introductionmentioning

confidence: 99%

Free-Space Nitrogen Laser from a Mid-Infrared Filament

Kartashov

Ališauskas

Pugžlys

et al. 2012

Research in Optical Sciences

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We report on laser emission at 337 nm and 357 nm from a filament generated in argonnitrogen mixture by femtosecond mid-infrared pulses. Energies as high as 3.5 J are achieved which corresponds to 0.5% total conversion efficiency from 3.9-µm, 7-mJ 80-fs pulses. Stimulated emission in an argon-nitrogen mixture is also achieved in the case of 1.03-µm 6-mJ 200-fs driving pulses, however only in the presence of multiple filaments and with a far inferior opticalto-optical efficiency. This novel source emitting nanosecond near-UV pulses in the backward, with respect to the driving pulse, direction opens new possibilities remote atmospheric sensing.

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“…pulsed gas discharge (in nitrogen) was reported by Mathias and Discharges in complex molecular gas mixtures had been Parker in 1963 [68]. Fast energy-transfer processes between studied for many years and empirical observations on the phe-N,, CO, and CO 2 had been appreciated for many years by the nomenology had been made on electronegative gases [611 for shock tube community.…”

Section: Maxismentioning

confidence: 99%