Solid-state laser-pumped high-power electric-discharge HF laser

Velikanov, S D; Гаранин, С. Г.; Domazhirov, A P; Efanov, V.M.; Efanov, M. V.; Kazantsev, S Yu; Kodola, B E; Komarov, Yu N; Kononov, I G; Podlesnykh, S V; Sivachev, A A; Firsov, K N; Shchurov, V V; Yarin, P.M.

doi:10.1070/qe2010v040n05abeh014324

Cited by 17 publications

(8 citation statements)

References 11 publications

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“…Hence, efficient generation can only be obtained under pumping by sufficiently short opti cal pulses. The characteristics appropriate for this purpose are specific to highpower nonchain electrodischarge HF lasers, which generate pulses with the duration of ~100-150 ns in the spectral range of 2.6-4.1 μm [23][24][25][26]. Pumping of ZnSe : Fe 2+ crystals by HF lasers yielded the current highest generation energy and average power at room temperature of the active element.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature laser on a ZnSe : Fe²⁺polycrystal with undoped faces, excited by an electrodischarge HF laser

et al. 2016

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Characteristics of a laser on a ZnSe : Fe 2+ polycrystalline active element with undoped faces (the concentration of Fe ions was maximal inside the crystal and zero at the faces) were studied. The laser was pumped by a nonchain electrodischarge HF laser at room temperature of the crystal. The active element was fabricated by the method of diffuse doping, which prevented the iron film newly deposited to a ZnSe substrate from interacting with atmospheric air (moisture and oxygen) and hindered the subsequent penetration of oxygen into the ZnSe matrix in the course of the hightemperature annealing of the sample. This method was used instead of those employed earlier for doping polycrystalline samples; it noticeably increased the efficiency and generation energy of a ZnSe : Fe 2+ laser at room temperature of the crystal. The generation energy was 298 mJ at the slope efficiency of η slope = 45% and the total efficiency with respect to the absorbed energy of η abs = 40%.

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Section: Introductionmentioning

confidence: 99%

Room-temperature laser on a ZnSe : Fe²⁺polycrystal with undoped faces, excited by an electrodischarge HF laser

et al. 2016

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“…In the case of the ZnSe:Fe 2+ laser, a similar problem has been solved [10][11][12][13][14] by employing non-chain electrodischarge HF lasers for pumping, in which the duration of the light pulse is 100-200 ns with actually unlimited output energy and which can operate in the pulse-periodic mode at high repetition rates [20][21][22][23]. The maximal generation energy per pulse in the case of pumping ZnSe:Fe 2+ by HF laser (at room temperature) was 253 mJ at an efficiency with respect to the energy absorbed in the sample of 28% [24].…”

Section: Introductionmentioning

confidence: 99%

High-energy room-temperature Fe²⁺:ZnS laser

et al. 2015

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Characteristics of a room temperature laser on polycrystalline ZnS:Fe2+ subjected to diffuse doping from two sides were investigated. The sample was pumped by a non-chain electrodischarge HF laser with the FWHM duration of the radiation pulse of ~140 ns. The diameter of the pumping radiation spot on the surface of the crystal was 3.8 mm. Further increases in the size of the pumping spot were limited by parasitic generation arising due to a high concentration of Fe ions in the near-surface layer of the sample at a relatively small depth of doping (short length of active medium). The generation energy of 25.5 mJ was obtained at a slope efficiency of 12% with respect to the energy incident on the sample. Characteristics of lasers on polycrystalline ZnS:Fe2+ and ZnSe:Fe2+ have been compared in equal pumping conditions. The slope efficiencies of ZnSe:Fe2+ and ZnS:Fe2+ lasers with respect to the absorbed energy were 34% and 20%, respectively. At equal pumping energy absorbed in the samples, the duration of the ZnSe:Fe2+ laser radiation pulse was longer than that of the ZnS:Fe2+ laser. Possibilities of increasing the efficiency of ZnS:Fe2+ laser operation at room temperature by improving the technology of sample manufacturing and reducing the duration of the pumping pulse are discussed in this letter.

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“…Thus, presently a maximal radiation energy of a ZnSe:Fe 2+ laser, excited by a short pulse of a solid-state laser (Er:YAG laser) at room temperature does not exceed the value E = 6 mJ [9]. The employment for pumping a non-chain electrodischarge HF laser [13][14][15] whose radiation spectrum completely fits the absorption band of Fe 2+ in a ZnSe crystal provided a noticeably greater generation energy of the ZnSe:Fe 2+ laser at room temperature [10][11][12]. The maximal energy per pulse was E = 192 mJ at 23% efficiency with respect to the energy absorbed in a sample [12].…”

Section: Introductionmentioning

confidence: 99%

Spectral and temporal characteristics of a ZnSe:Fe²⁺laser pumped by a non-chain HF(DF) laser at room temperature

Firsov¹,

Гаврищук²,

Kazantsev³

et al. 2014

Laser Phys. Lett.

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Spectral and temporal characteristics of a ZnSe:Fe 2+ laser with a nonselective resonator pumped at room temperature by the radiation of a pulse-periodical electrodischarge HF(DF) laser are studied. It was established that the spectral distributions of the energy and peak power of ZnSe:Fe 2+ laser generation depend on a spectral composition of the pumping radiation. The spectra exhibit a line structure with spectral intervals between neighboring lines δ λ ≈ 6.8 ÷ 8.6 nm. The shape of the ZnSe:Fe 2+ laser generation pulse is wavelength dependent. In a short-wavelength range, the pulse has the form of a peak with a duration of ~5 ns at half-maximum. At a longer wavelength, the peak is accompanied by a 'tail'. The duration and amplitude of the tail increase with wavelength, in a long-wavelength spectrum range, the peak actually becomes unnoticeable on a background of the 'tail'. The spectral dependence of the ZnSe:Fe 2+ laser generation pulse's shape affects the positions of the energy and peak power maxima on the wavelength axis. The dynamics of ZnSe:Fe 2+ laser generation under the pumping by the pulsed HF(DF) laser is discussed.

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Solid-state laser-pumped high-power electric-discharge HF laser

Cited by 17 publications

References 11 publications

Room-temperature laser on a ZnSe : Fe²⁺polycrystal with undoped faces, excited by an electrodischarge HF laser

Room-temperature laser on a ZnSe : Fe²⁺polycrystal with undoped faces, excited by an electrodischarge HF laser

High-energy room-temperature Fe²⁺:ZnS laser

Spectral and temporal characteristics of a ZnSe:Fe²⁺laser pumped by a non-chain HF(DF) laser at room temperature

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Solid-state laser-pumped high-power electric-discharge HF laser

Cited by 17 publications

References 11 publications

Room-temperature laser on a ZnSe : Fe2+polycrystal with undoped faces, excited by an electrodischarge HF laser

Room-temperature laser on a ZnSe : Fe2+polycrystal with undoped faces, excited by an electrodischarge HF laser

High-energy room-temperature Fe2+:ZnS laser

Spectral and temporal characteristics of a ZnSe:Fe2+laser pumped by a non-chain HF(DF) laser at room temperature

Contact Info

Product

Resources

About

Room-temperature laser on a ZnSe : Fe²⁺polycrystal with undoped faces, excited by an electrodischarge HF laser

Room-temperature laser on a ZnSe : Fe²⁺polycrystal with undoped faces, excited by an electrodischarge HF laser

High-energy room-temperature Fe²⁺:ZnS laser

Spectral and temporal characteristics of a ZnSe:Fe²⁺laser pumped by a non-chain HF(DF) laser at room temperature