Optical spectroscopy of the new laser materials, LiSrAlF6:Cr3+ and LiCaAlF6:Cr3+

Payne, Stephen A.; Chase, L. L.; Wilke, G.D.

doi:10.1016/0022-2313(89)90052-5

Cited by 124 publications

(67 citation statements)

References 26 publications

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“…The presence of octahedral sites is due to strong ligand field stabilization energy of Cr 3+ ions in six-fold coordination. The parity-forbidden d-d transitions may be due to partially allowed by weak distortion of the crystal field or by instantaneous distortion due to molecular vibrations [30][31][32][33][34]. Here, the E opt values are 3.43eV, 2.71eV, 3.39eV and 3.36eV for LPZ glass, NPZ glass, KPZ glass and PZ glass [23] respectively.…”

Section: Resultsmentioning

confidence: 93%

Structural Investigations of Cr3+ Ions Doped Alkali Lead Zinc Phosphate Glasses

Sastry¹

2015

IJIRSET

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Lead zinc phosphate glasses containing 0.1% transition metal ion Cr 3+ were prepared by melt quenching technique and their amorphous nature confirmed by X-Ray diffraction. The covalent bond nature of Cr 3+ ions with octahedral symmetry in glass network was established through Electron Paramagnetic Resonance and optical absorption spectroscopic studies. Endothermic dip for glass transition temperature (T g ) at about 410 0 C and an exothermic peak subsisted from thermal studies were obtained. De-polymerization of host glass network due to addition of alkali content to the glass matrix, has turned as a strong candidate for nonlinear optical laser applications.

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Section: Resultsmentioning

confidence: 93%

Structural Investigations of Cr3+ Ions Doped Alkali Lead Zinc Phosphate Glasses

Sastry¹

2015

IJIRSET

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“…The absorption oscillator strength f abs was evaluated from the absorption spectrum by the relation [13] f abs 9n…”

Section: Emission Spectra Analysismentioning

confidence: 99%

Spectroscopic Properties of Cr3+-Doped Phosphate Glasses

Haouari

Ajroud

Ouada

et al. 1999

phys. stat. sol. (b)

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Emission spectroscopy of Cr3+‐doped phosphate glasses has been studied. Different site distributions of the chromium ions having an environment with nearly octahedral symmetry could be identified on the basis of the luminescence decay characteristics and the time‐resolved emission study. The low quantum yield in luminescence is attributed to an efficient multiphonon relaxation process deexciting rapidly ions submitted to the weaker crystal field.

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“…Since the impurity is nearly always situated in octahedral sites, the absorption and emission spectra are similar in a large variety of materials, the main distinction being the strength of the octahedral field, rather than its exact nature (59) This is well demonstrated by the absorption and emission spectra of ruby, alexandrite, and Cr:Li-SAF, the materials illustrated in this section. The absorption spectra at lower energies are all characterized by two broad bands corresponding to the transitions, with the positions of the peaks changing according to the field strength.…”

Section: Methodsmentioning

confidence: 83%