Transversely optically pumped Ar:He laser with a pulsed-periodic discharge

Mikheyev, P. A.; Чернышов, А. К.; Svistun, M I; Ufimtsev, Nikolay I.; Kartamysheva, O. S.; Azyazov, Valeriy N.

doi:10.1364/oe.383276

Cited by 21 publications

(4 citation statements)

References 17 publications

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“…and voltage measured at point A, was about 2.1 mJ. The current generated by the discharge device is one order of magnitude higher than that of Mikheyev et al [15] , suggesting a higher degree of ionization in this case. Photos of discharge plasma along the x and y directions are depicted in Fig.…”

Section: Resultscontrasting

confidence: 45%

“…The main factor limiting the improvement of laser power is the volume of gain medium. The previous theoretical model suggested that a discharge volume of tens of cubic centimeters would be required for a 100 kW laser system [13] , which was much larger than the volume reported in the studies [9][10][11][14][15][16][17][18][19] . In fact, it is a common challenge of any electrical discharge to generate dense plasma in a large volume.…”

Section: Introductionmentioning

confidence: 83%

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Segmented pulsed discharge for metastable argon lasing medium

et al. 2022

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Direct current pulsed discharge is a promising route for producing high-density metastable particles required for optically pumped rare gas lasers (OPRGLs). Such metastable densities are easily realized in small discharge volumes at near atmospheric pressures, but problems appear when one is trying to achieve a large volume of plasma for high-power output. In this work, we examined the volume scalability of high-density metastable argon atoms by segmented discharge configuration. Two discharge zones attached with peaking capacitors were connected parallelly by thin wires, through which the peaking capacitors were charged and of which the inductance functioned as ballasting impendence to prevent discharging in only one zone. A uniform and dense plasma with the peak value of the number densities of Ar (1s 5 ) on the order of 10 13 cm −3 was readily achieved. The results demonstrated the feasibility of using segmented discharge for OPRGL development.

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Section: Resultscontrasting

confidence: 45%

Section: Introductionmentioning

confidence: 83%

Segmented pulsed discharge for metastable argon lasing medium

et al. 2022

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“…Relevant prior research includes investigations of collisional state-to-state energy transfer kinetics, , collisional line broadening rates, − the kinetics of discharge production of Ar(1s 5 ) metastables, ,− and kinetics-based models of scaling the laser output to elevated powers. − Various laser and discharge design configurations have also been investigated. − In this paper, we describe experimental measurements and kinetics analysis of spatially resolved small-signal gain produced by optical pumping of Ar(1s 5 ) generated in microplasma arrays, as well as diode-pumped lasing, following the transition sequence illustrated in Figure . Analysis of the optical gain results required additional research to characterize the spatially resolved microdischarge temperatures and collisional line-broadening dynamics, and to verify the relevant microplasma spectroscopy and branching ratios; those results are provided in the Supporting Information.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Metastable Argon Optical Excitation and Gain in Ar/He Microplasmas

et al. 2023

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The optically pumped rare-gas metastable laser is capable of high-intensity lasing on a broad range of near-infrared transitions for excited-state rare gas atoms (Ar*, Kr*, Ne*, Xe*) diluted in flowing He. The lasing action is generated by photoexcitation of the metastable atom to an upper state, followed by collisional energy transfer with He to a neighboring state and lasing back to the metastable state. The metastables are generated in a high-efficiency electric discharge at pressures of ∼0.4 to 1 atm. The diode-pumped rare-gas laser (DPRGL) is a chemically inert analogue to diode-pumped alkali laser (DPAL) systems, with similar optical and power scaling characteristics for high-energy laser applications. We used a continuous-wave linear microplasma array in Ar/He mixtures to produce Ar(1s5) (Paschen notation) metastables at number densities exceeding 1013 cm–3. The gain medium was optically pumped by both a narrow-line 1 W titanium-sapphire laser and a 30 W diode laser. Tunable diode laser absorption and gain spectroscopy determined Ar(1s5) number densities and small-signal gains up to ∼2.5 cm–1. Continuous-wave lasing was observed using the diode pump laser. The results were analyzed with a steady-state kinetics model relating the gain and the Ar(1s5) number density.

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“…Wang et al [8,9] recently proposed a new scheme for extracting lasing in a plasma jet, potentially overcoming the power-scaling obstacles in previously used confined discharges. Until now, most research on DPRGLs has been carried out using Ar* as the gain medium [15][16][17][18] and a little on the Xe* laser [5,19,20] . The only research for the Kr* laser is on concept verification and kinetics investigation [1,21] , and no study using high-power diode pumping has been reported.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a diode-pumped dual-wavelength metastable krypton laser

Liu,

Wang,

Yang

et al. 2023

High Pow Laser Sci Eng

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Diode-pumped rare gas lasers are potential candidates for high-energy and high-beam quality laser systems. Currently, most investigations are focused on metastable Ar lasers. The Kr system has the unique advantages of higher quantum efficiency and lower discharge requirements for comparison. In this paper, a diode-pumped metastable Kr laser was demonstrated for the first time. Using a repetitively pulsed discharge at a Kr/He pressure of up to approximately 1500 Torr, metastable Kr atoms of more than 10 13 cm -3 were generated. Under diode pumping, the laser realized a dual-wavelength output with an average output power of approximately 100 mW and an optical conversion efficiency of approximately 10% with respect to the absorbed pump power. A kinetics study involving population distribution and evolution was conducted to analyze the laser performance.

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Transversely optically pumped Ar:He laser with a pulsed-periodic discharge

Cited by 21 publications

References 17 publications

Segmented pulsed discharge for metastable argon lasing medium

Segmented pulsed discharge for metastable argon lasing medium

Kinetics of Metastable Argon Optical Excitation and Gain in Ar/He Microplasmas

Demonstration of a diode-pumped dual-wavelength metastable krypton laser

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