Powerful BaWO4 Raman laser pumped by a self-phase-conjugated Nd: YAG and Nd: GGG lasers

Basiev, Tasoltan T.; Danileiko, Yuri K.; Doroshenko, Maxim E.; Осико, В. В.; Федин, А. В.; Gavrilov, Andrey V.; Smetanin, S. N.

doi:10.1364/assp.2004.tub11

Cited by 12 publications

(12 citation statements)

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“…Typically, excitation with short-wavelength UV light (210–280 nm) gives blue emission, while longer wavelengths (e.g., 325 nm) induce an additional green component, which is the object of our study. These phenomena are also discussed in many other papers such as those, for example, by Lou and Ma et al Since numerous origins of both PL types in BaWO 4 have been proposed, ranging from defect centers associated with interstitial oxygen atoms to specific structural disorder, additional crystal lattice studies have been carried out. − Some of them concern not only XRD but also lattice dynamics studied via Raman spectroscopy, since barium tungstate is a good, scattering-active crystal (Raman shifter), considered for pump pulse lasers in order to acquire stimulated Raman spectra. ,− …”

Section: Introductionmentioning

confidence: 99%

High-Pressure Low-Temperature Optical Studies of BaWO₄:Ce,Na Crystals

et al. 2019

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We report detailed optical studies of BaWO4:Ce and BaWO4:Ce,Na single crystals. The material does not emit any luminescence at ambient pressure under near-UV (325 nm) excitation. Efficient green light is emitted only at high pressure (HP) and low temperature (LT). The luminescence is of excitonic character, since the lowest Ce3+ 5d level is degenerate with the conduction band also under hydrostatic pressures. To explain these phenomena, absorption measurements were made together with powder X-ray diffraction (XRD) and confocal micro-Raman and Fourier transform infrared (FTIR) spectroscopy. Raman experiments confirm the existence of a metastable phase, induced by certain nonhydrostatic conditions, before the reversible transition at a high-pressure range above 9 GPa, where efficient photoluminescence (PL) occurs. Although the phase transition is reversible, it proceeds with a prominent hysteresis observed in luminescence and Raman experiments. FTIR focuses on the existence of Ce3+ multisites observed during LT measurements.

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Section: Introductionmentioning

confidence: 99%

High-Pressure Low-Temperature Optical Studies of BaWO₄:Ce,Na Crystals

et al. 2019

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“…BaWO 4 also has a high optical damage threshold and good mechanical and thermal properties. This crystal can be used not only for the quasi-steady-state (nanosecond) regime of SRS [11][12][13], but also for effective transient (picosecond) Raman conversion [14][15][16]. SRS generation in an a-cut BaWO 4 crystal can be realized not only with a long Raman shift of ν 1 = 925 cm −1 but also with a short Raman shift of ν 2 = 332 cm −1 if the pump radiation is polarized along the crystal optical axis (E c).…”

Section: Introductionmentioning

confidence: 99%

Multi-wavelength picosecond BaWO₄Raman laser with long and short Raman shifts and 12-fold pulse shortening down to 3 ps at 1227 nm

et al. 2018

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In this paper, we demonstrate the generation of three (1179, 1227, and 1323 nm) Stokes components of stimulated Raman scattering with long (925 cm −1 ) and short (332 cm −1 ) Raman shifts in an all-solid-state, synchronously pumped, extra-cavity Raman laser based on a BaWO 4 crystal excited by a quasi-continuous, 36 ps, diode side-pumped Nd:GdVO 4 laser generating at the wavelength of 1063 nm. We achieved the strongest 12-fold pulse shortening down to 3 ps at the 925 cm −1 + 332 cm −1 shifted 1227 nm wavelength due to a shorter dephasing time (wider linewidth) of the short-shift 332 cm −1 Raman line, resulting in a peak power of 2.5 kW.

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“…Thus the Nd:GGG crystal has potential applications for diode-pumped high power lasers. Some papers about Nd:GGG lasers operating at 1062 nm [4][5][6][7][8][9][10][11][12], 1331 nm [13][14][15] and 937 nm [16,17] have been reported recently. However, among these Nd:GGG lasers, only simultaneous dual-wavelength generation at around 1062 nm ( 4 F 3/2 -4 I 11/2 ) and 1331 nm ( 4 F 3/2 -4 I 13/2 ) has been reported, using the four level system [18].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous dual-wavelength laser operation at 937 and 1062 nm in Nd³⁺:Gd₃Ga₅O₁₂

Gao¹,

Sun²,

Li³

et al. 2013

Laser Phys.

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Diode-end-pumped continuous-wave (cw) simultaneous dual-wavelength laser operation at 937 and 1062 nm in a single Nd 3+ :Gd 3 Ga 5 O 12 (Nd:GGG) crystal was demonstrated. A total output power of 1.12 W at the two fundamental wavelengths was achieved at incident pump power of 17.6 W. The optical-to-optical conversion was up to 6.4% with respect to the incident pump power. To the best of our knowledge, this is first work on cw simultaneous dual-wavelength operation at 937 and 1062 nm in Nd:GGG crystal.

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Powerful BaWO4 Raman laser pumped by a self-phase-conjugated Nd: YAG and Nd: GGG lasers

Cited by 12 publications

References 1 publication

High-Pressure Low-Temperature Optical Studies of BaWO₄:Ce,Na Crystals

High-Pressure Low-Temperature Optical Studies of BaWO₄:Ce,Na Crystals

Multi-wavelength picosecond BaWO₄Raman laser with long and short Raman shifts and 12-fold pulse shortening down to 3 ps at 1227 nm

Simultaneous dual-wavelength laser operation at 937 and 1062 nm in Nd³⁺:Gd₃Ga₅O₁₂

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Powerful BaWO4 Raman laser pumped by a self-phase-conjugated Nd: YAG and Nd: GGG lasers

Cited by 12 publications

References 1 publication

High-Pressure Low-Temperature Optical Studies of BaWO4:Ce,Na Crystals

High-Pressure Low-Temperature Optical Studies of BaWO4:Ce,Na Crystals

Multi-wavelength picosecond BaWO4Raman laser with long and short Raman shifts and 12-fold pulse shortening down to 3 ps at 1227 nm

Simultaneous dual-wavelength laser operation at 937 and 1062 nm in Nd3+:Gd3Ga5O12

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Product

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High-Pressure Low-Temperature Optical Studies of BaWO₄:Ce,Na Crystals

High-Pressure Low-Temperature Optical Studies of BaWO₄:Ce,Na Crystals

Multi-wavelength picosecond BaWO₄Raman laser with long and short Raman shifts and 12-fold pulse shortening down to 3 ps at 1227 nm

Simultaneous dual-wavelength laser operation at 937 and 1062 nm in Nd³⁺:Gd₃Ga₅O₁₂