Magnesium Fluoride (MgF2)

Cotter, Thomas M.; Thomas, Michael E.; Tropf, William J.

doi:10.1016/b978-012544415-6.50087-x

Cited by 4 publications

(2 citation statements)

References 40 publications

(71 reference statements)

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“…Magnesium fluoride has a broader transparency range than crystal quartz, ranging from <120 nm in the ultraviolet to >8 µm in the infrared. 9 Magnesium fluoride is softer than crystal quartz (6 on the Mohs scale), and is consequently more difficult to polish, as it will often display sleeking even after careful polishing. Magnesium fluoride is typically used either in applications where crystal quartz does not transmit, or is paired with crystal quartz to make achromatic waveplates.…”

Section: Methodsmentioning

confidence: 99%

Birefringence measurements of crystal quartz, magnesium fluoride, and synthetic sapphire

Gartman,

Kupinski

2024

Polarization: Measurement, Analysis, and Remote Sensing XVI

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Accurate birefringence measurements are necessary for designing and producing optics that manipulate polarized light. This is of particular importance for waveplates, which must be polished to a specific thickness, typically with a tolerance on the order of ± 0.25 µm. In this work the birefringence of three common waveplate materials is studied: crystal quartz (over the wavelength range of 320-1650 nm), magnesium fluoride (over the wavelength range of 300-1800 nm), and synthetic sapphire (over the wavelength range of 300-1400 nm). Two independent birefringence measurement methods are reported, which agree with each other to within 5 × 10 −6 for each material. These methods are compared to previously published values, which are within 1.5 × 10 −5 for a large portion of the wavelength range measured for quartz and magnesium fluoride, and within 4 × 10 −5 for sapphire. Additionally, dispersion formulae for each material are determined.

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Section: Methodsmentioning

confidence: 99%

Birefringence measurements of crystal quartz, magnesium fluoride, and synthetic sapphire

Gartman,

Kupinski

2024

Polarization: Measurement, Analysis, and Remote Sensing XVI

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“…As far as we know, no report was published on the effects of MgF 2 [10] doping on the tunable and dielectric properties of barium strontium titanate ceramics. In this paper, the microstructure and dielectric performance of MgF 2 doped Ba 0.6 Sr 0.4 TiO 3 (BSTO) were investigated.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Doped MgF<sub>2</sub> on the Dielectric Properties of Barium Strontium Titanate Ceramics

Liu

Zhao

Wang

et al. 2011

MSF

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Barium-strontium titanate Ba1-xSrxTiO3[0≤x≤1] has been investigated for tunable microwave application due to their high permittivity, low losses and high tunability. The influence of MgF2additives on the dielectric performance of Ba0.6Sr0.4TiO3(BSTO) were investigated in this paper. MgF2doped BSTO ceramics were prepared using the conventional mixed oxide techniques. The phase structure, microstructure and dielectric properties of MgF2doped BSTO ceramics were studied. The XRD patterns showed that all the samples exhibit a perovskite phase. A secondary phase of MgO was observed with excessive MgF2additives. The grain size of MgF2doped BSTO ceramics was slightly increased with the increasing of MgF2additives, while the distributed porosity was concentrated to get larger. The relative permittivity, dielectric loss and tunability were decreased accordingly. The relative permittivity was reduced from 3717 (pure Ba0.6Sr0.4TiO3) to 680 (6 wt % MgF2doped BSTO), while the tunability changed from 51.7 % to 6.5 %. The dielectric losses were decreased from 0.004 to less than 0.001. The Curie temperature of MgF2doped BSTO was first decreased with the additives of MgF2(x<2 wt %) then remain the same with the rise of MgF2(2≤x≤6) content.

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Combining structures on different length scales in ray tracing: analysis of optical losses in solar cell modules

et al. 2014

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Magnesium Fluoride (MgF2)

Cited by 4 publications

References 40 publications

Birefringence measurements of crystal quartz, magnesium fluoride, and synthetic sapphire

Birefringence measurements of crystal quartz, magnesium fluoride, and synthetic sapphire

The Influence of Doped MgF<sub>2</sub> on the Dielectric Properties of Barium Strontium Titanate Ceramics

Combining structures on different length scales in ray tracing: analysis of optical losses in solar cell modules

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