Luminescence properties, crystal growth and laser capability of Cr3+ -doped LMA

Borel, C.; Wyon, C.; Aubert, J.J.; Manaa, H.; Moncorgé, R.

doi:10.1016/0022-2313(93)90014-e

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…After the first report on lasing in Nd 3+ -activated LMA [41], many efforts were devoted to the Cr 3+ doped LMA because it was thought to be a good substitute for alexandrite [43]. Apart from applications like solid state lasers and various phosphor related applications, LMA has been proposed for number of other applications in industry, military and scientific research, which include dielectric resonators [44], combustion catalyst support, and thermal barrier coatings [45].…”

Section: Lamgal 11 O 19mentioning

confidence: 99%

Combustion Synthesis of Some Cr3+-Activated Aluminate Phosphors

Tumram¹,

Kautkar

Wankhede³

et al. 2021

Phys. Solid State

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Luminescence of Cr 3+ is important in context of solid state lasers as well as studies on precious stones. Several such luminescent materials are based on aluminates. We have exploited the fact that aluminate powders can be easily prepared by combustion synthesis for exploring new phosphors based on aluminates. Results of this investigation are reported here. Luminescence of Cr 3+ in hitherto unexplored

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Section: Lamgal 11 O 19mentioning

confidence: 99%

Combustion Synthesis of Some Cr3+-Activated Aluminate Phosphors

Tumram¹,

Kautkar

Wankhede³

et al. 2021

Phys. Solid State

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“…The unit cell is made of spinal like blocks containing Al 3+ and Mg 2+ cations separated by mirror planes containing Al 3+ and La 3+ cations. The Al 3+ ions, for which the Cr 3+ ions can substitute, site in various environments: (first) in the mirror planes they site in trigonal bipyramid environments (co ordinance 5) of C 3v symmetry, and (second) Inside the spinal blocks they can site in 2a regular octahedral (co ordinance 6) of D 3d symmetry, 4f t tetrahedral (coordinence 4) of C 3v symmetry, 12k distorted octahedral (coordinence 6) of C S symmetry and 4f o antiprisms (coordinence 6) of C 3v symmetry [9,10].…”

Section: Crystal Structure and Materialsmentioning

confidence: 99%

Nonlinear optical properties of Cr³⁺-doped lanthanum-magnesium hexa-aluminate LaMgAl₁₁O₁₉

Manaa

2005

Laser Phys. Lett.

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A single beam Z-Scan technique is used to characterize the nonlinear optical properties of Cr3+-doped lanthanum-magnesium hexa-aluminate LaMgAl11O19 with c.w. laser radiation at 514.5 nm. The real part n' 2 = 2.6 × 10-8 cm2/W and the imaginary part n'' 2 = - 1.1 × 10-9 cm2/W of the laser induced complex refractive index are measured. The excited state absorption cross-section is deduced and found to be 3×10-20 cm2 at the same wavelength.

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Boltzmann Thermometry in Cr³⁺‐Doped Ga₂O₃ Polymorphs: The Structure Matters!

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Ueda

Nambu

et al. 2021

Advanced Optical Materials

107

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The performance of luminescent Cr3+‐doped thermometers is strongly influenced by the locally surrounding ligand field. A universal relationship between the thermometric performance and structural/chemical parameters is highly desirable to drive the development of effective Cr3+‐based thermal sensors avoiding trial‐and‐error procedures. In this view, as prototypes, the electronic structure and the thermometric performance of Cr3+‐doped α‐Ga2O3 and β‐Ga2O3 polymorphs are compared. Combining a detailed theoretical and spectroscopic investigation, the electronic configuration and the crystal field (CF) acting on the Cr3+ in α‐Ga2O3 are described for the first time and compared with β‐Ga2O3:Cr3+ polymorph to discuss the thermometric behavior. A linear relationship between the 4T2–2E energy gap (directly linked to the relative sensitivity) and the CF strength Dq is demonstrated for a wide variety of materials. This trend can be considered as a first step to set guiding principles to design effective Cr3+‐based Boltzmann thermometers. In addition, as a proof of concept, particles of β‐Ga2O3:Cr3+ thermometer are used to locally measure in operando thermal variations of Pt catalysts on β‐Ga2O3:Cr3+ support during a catalytic reaction of C2H4 hydrogenation in a contactless and reliable mode, demonstrating their real potentials.

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Luminescence properties, crystal growth and laser capability of Cr3+ -doped LMA

Cited by 6 publications

References 13 publications

Combustion Synthesis of Some Cr3+-Activated Aluminate Phosphors

Combustion Synthesis of Some Cr3+-Activated Aluminate Phosphors

Nonlinear optical properties of Cr³⁺-doped lanthanum-magnesium hexa-aluminate LaMgAl₁₁O₁₉

Boltzmann Thermometry in Cr³⁺‐Doped Ga₂O₃ Polymorphs: The Structure Matters!

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Luminescence properties, crystal growth and laser capability of Cr3+ -doped LMA

Cited by 6 publications

References 13 publications

Combustion Synthesis of Some Cr3+-Activated Aluminate Phosphors

Combustion Synthesis of Some Cr3+-Activated Aluminate Phosphors

Nonlinear optical properties of Cr3+-doped lanthanum-magnesium hexa-aluminate LaMgAl11O19

Boltzmann Thermometry in Cr3+‐Doped Ga2O3 Polymorphs: The Structure Matters!

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Nonlinear optical properties of Cr³⁺-doped lanthanum-magnesium hexa-aluminate LaMgAl₁₁O₁₉

Boltzmann Thermometry in Cr³⁺‐Doped Ga₂O₃ Polymorphs: The Structure Matters!