Efficient 3-μm Cr3+: Yb3+: Ho3+:YSGG crystal laser

Umyskov, A F; Zavartsev, Yu. D.; Zagumennyĭ, A. I.; Осико, В. В.; Studenikin, P. A.

doi:10.1070/qe1996v026n09abeh000777

Cited by 14 publications

(4 citation statements)

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“…Sample 2, with a relatively low concentration of iron ions (4 × 10 17 cm −3 ), was used as a passive Q-switch for a lamppumped Cr 3+ :Yb 3+ :Ho 3+ :YSGG laser [25] operating at the 5 I 6 -5 I 7 transition of the Ho 3+ ion. The active element of this laser, 4 mm in diameter and 100 mm long, was placed in a nonselective cavity with a length of 34 cm, which was formed by plane mirrors with interference coatings.…”

Section: Experimental Setup For Laser Experimentsmentioning

confidence: 99%

CVD-grown Fe²⁺:ZnSe polycrystals for laser applications

et al. 2017

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A technique for growing bulk zinc selenide polycrystals, doped with iron ions, by chemical vapor deposition (CVD), has been developed. It has been shown that iron is embedded in the crystal lattice of deposited zinc selenide in the optically active state of Fe 2+ . To improve the optical quality, the grown material was subjected to postgrowth hot isostatic pressing (HIP) treatment. It was experimentally demonstrated that the synthesised bulk crystals can be used as the active media of Fe 2+ :ZnSe lasers and as the passive Q-switches for three-micron lasers. The letter goes on to discuss the prospect of extending the proposed method to the synthesis of zinc sulphide doped with iron ions.

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Section: Experimental Setup For Laser Experimentsmentioning

confidence: 99%

CVD-grown Fe²⁺:ZnSe polycrystals for laser applications

et al. 2017

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“…3,4 Another possibility of producing 3 m radiation is the 5 I 6 → 5 I 7 transition of Ho 3ϩ . Pulsed laser oscillation under flash lamp excitation in bulk material, 5 krypton-ion-laser pumped at 640 nm in fibers, 6 and diode-pumped in Yb, Ho: potassium-yttrium-flouride (KYF 4 ) 7 was already demonstrated for this transition.…”

Section: Introductionmentioning

confidence: 98%

Spectroscopy and diode-pumped laser oscillation of Yb3+, Ho3+-doped yttrium scandium gallium garnet

Diening

Kück

2000

Journal of Applied Physics

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We report on the laser oscillation of Yb3+, Ho3+-doped yttrium scandium gallium garnet around 1.2 and 3 μm under laser diode excitation. At 1208 nm output powers of up to 135 mW and slope efficiencies up to 7.6% with respect to the incident pump power were achieved at room temperature under continuous wave excitation. Quasicontinuous wave excitation led to laser emission at 2844 nm with pulse energies up to 10 m.J. The laser relevant spectroscopic data, i.e., lifetimes, absorption, and emission cross sections are given and the excited state absorption spectrum is presented.

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“…At present, the 2.7-3 μm rare-earth laser crystals have been widely investigated, and various laser crystals with excellent performances have realized laser output in this spectral region, such as Er:YAG (2.94 μm) [6], Er,Pr:GYSGG (2.79 μm) [7,8], Cr,Yb,Ho:YSGG (2.842 μm, 2.888 μm, 2.926 μm, 2.962 μm, 2.973 μm, 3.057 μm) [9], and Ho:YAP (2.844 μm, 2.855 μm, 2.856 μm, 2.920 μm, 3.017 μm) [10] crystals, et al Although the 2.7-3 μm wavelength range is a vibrational absorption band of water, there also exist fine spectral wavebands which have only very weak water absorption, especially at the wavelength of 2.911 μm. Hence, the 2.911 μm laser has a characteristic of low water absorption loss when it transmits through the ground of containing water vapor, which can be applied in the fields of military, detection, and scientific research.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, mid-infrared (MIR) lasers in the region of 2.7-3 μm have attracted much attention because of their wide applications in the fields of atmospheric monitoring, medical surgery, remote sensing, and scientific research. [1][2][3][4][5] At present, the 2.7-3 μm rare-earth laser crystals have been widely investigated, and various laser crystals with excellent performances have realized laser output in this spectral region, such as Er: YAG (2.94 μm), 6 Er,Pr:GYSGG (2.79 μm), 7,8 Cr,Yb,Ho:YSGG (2.842 μm, 2.888 μm, 2.926 μm, 2.962 μm, 2.973 μm, and 3.057 μm), 9 Ho:YAP (2.844 μm, 2.855 μm, 2.856 μm, 2.920 μm, and 3.017 μm), 10 etc. Although the 2.7-3 μm wavelength range is a vibrational absorption band of water, there also exist fine spectral wavebands which have only very weak water absorption, especially at the wavelength of 2.911 μm.…”

Section: Introductionmentioning

confidence: 99%

Growth, structure, and spectroscopic properties of a Cr³⁺, Tm³⁺, Ho³⁺, and Pr³⁺co-doped LuYAG single crystal for 2.9 μm laser

et al. 2016

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A new laser crystal Lu 2.4 Y 0.6 Al 5 O 12 (LuYAG) co-doped with Cr 3+ , Tm 3+ , Ho 3+ , and Pr 3+ ions was grown successfully by the Czochralski method for the first time. The structure parameters of the Cr,Tm,Ho,Pr:LuYAG crystal are determined by the X-ray Rietveld refinement method. Main absorption bands near 426 and 782 nm are observed, and the fluorescence spectrum excited by 450 nm or 783 nm LD presents emission band near 2.911 μm, indicating that the co-doped Cr 3+ and Tm 3+ions can be utilized as the sensitizer for the Ho 3+ ions. The lifetimes of the 5 I 6 and 5 I 7 levels of the Ho 3+ ions were measured and fitted to be 0.070 ms and 1.852 ms, respectively. The energy transfer efficiencies of 5 I 6 (Ho 3+ ) → 3 F 3,4 (Pr 3+ ) and 5 I 7 (Ho 3+ ) → 3 F 2 (Pr 3+ ) + 3 H 6 (Pr 3+ ) processes were calculated, showing that the Pr 3+ ions can play a role of the deactivator for the Ho 3+ ions. Furthermore, the energy transfer mechanisms among the Cr 3+ , Tm 3+ , Ho 3+ , and Pr 3+ ions are studied. These results suggest that the Cr,Tm,Ho,Pr:LuYAG crystal is a new promising laser medium operated around 2.9 μm under a flash lamp or 783 nm LD pumping.

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Efficient 3-μm Cr³⁺: Yb³⁺: Ho³⁺:YSGG crystal laser

Cited by 14 publications

References 1 publication

CVD-grown Fe²⁺:ZnSe polycrystals for laser applications

CVD-grown Fe²⁺:ZnSe polycrystals for laser applications

Spectroscopy and diode-pumped laser oscillation of Yb3+, Ho3+-doped yttrium scandium gallium garnet

Growth, structure, and spectroscopic properties of a Cr³⁺, Tm³⁺, Ho³⁺, and Pr³⁺co-doped LuYAG single crystal for 2.9 μm laser

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Efficient 3-μm Cr3+: Yb3+: Ho3+:YSGG crystal laser

Cited by 14 publications

References 1 publication

CVD-grown Fe2+:ZnSe polycrystals for laser applications

CVD-grown Fe2+:ZnSe polycrystals for laser applications

Spectroscopy and diode-pumped laser oscillation of Yb3+, Ho3+-doped yttrium scandium gallium garnet

Growth, structure, and spectroscopic properties of a Cr3+, Tm3+, Ho3+, and Pr3+co-doped LuYAG single crystal for 2.9 μm laser

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Efficient 3-μm Cr³⁺: Yb³⁺: Ho³⁺:YSGG crystal laser

CVD-grown Fe²⁺:ZnSe polycrystals for laser applications

CVD-grown Fe²⁺:ZnSe polycrystals for laser applications

Growth, structure, and spectroscopic properties of a Cr³⁺, Tm³⁺, Ho³⁺, and Pr³⁺co-doped LuYAG single crystal for 2.9 μm laser