VIS-IR transmitting windows

Bayya, Shyam; Chin, Geoffrey D.; Villalobos, Guillermo; Sanghera, J. S.; Aggarwal, Ishwar D.

doi:10.1117/12.603753

Cited by 23 publications

(11 citation statements)

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“…Recent developments in optical ceramics and glasses have led to new materials for visible and infrared transmitting windows. The linear optical and mechanical properties as well as the thermo-optic behavior of the new materials-MgAl 2 O 4 (spinel), aluminum oxynitride (AlON), multispectral ZnS (CLEARTRAN), and barium gallogermanate glass (BGG)-have been extensively studied [1][2][3][4][5][6]. While these linear optical properties are now known, only ZnS [7] nonlinear optical properties have been thoroughly studied.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Z-scan measurements of nonlinear optical constants of window materials at 772, 1030, and 1550 nm

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Ultrafast Z-scan measurements of nonlinear optical constants of window materials at 772, 1030, and 1550 nm

et al. 2015

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“…The phonon energy has been decreased by introducing appropriate amount of GeO 2 into silicate glass, which can reduce the multiphonon relaxation rate and enhance the quantum efficiency of 2.0 µm. Moreover, the addition of GeO 2 in silicate host can enhance the refractive index of the glass host and which is beneficial for improving the 2.0 µm emission cross section [18,19]. Therefore, germanosilicate glass which combines the merits of germanate and silicate glasses can be a suitable optical material for mid-infrared fiber lasers [20].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Structural and fluorescence properties of Ho3+/Yb3+ doped germanosilicate glasses tailored by Lu2O3

Cao

Huang

et al. 2018

Journal of Alloys and Compounds

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Structural and fluorescence properties of Ho 3+ /Yb 3+ co-doped germanosilicate glasses have been modified by tailoring the composition using lanthanide additive Lu 2 O 3. Raman spectra and X-ray Photoelectron spectra reveal that the addition of Lu 2 O 3 can change the structure by increasing non-bridging oxygens (NBO) in this glasses. Meanwhile, an improved thermal stability (∆T: from 110 to 187 ˚C) has also been obtained via Lu 3+ 'lanthanide contraction'. Futhermore, the positive effect of changed glass structure gives excellent fluorescence properties by the decreasing cross relaxation process which are proved by the experimental upconversion, near-infrared and mid-infrared fluorescence spectra. Additionally, a double enhancement of a 2.0 µm emission has been achieved successfully in this silica-germanate glass with 7 mol% Lu 3+ addition, which possesses a larger emission cross section (4.41 × 10 −21 cm 2) at 2022 nm. These results indicate that the optimized emission of Ho 3+ for optical fiber laser can be achieved by tuning the glass structure using lanthanide additive Lu 2 O 3 .

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“…Some of the HEL systems are expected to operate in harsh environmental conditions where fused silica and OFG glasses will not survive, and so rugged windows are required. We have developed transparent magnesium aluminate spinel (MgAl 2 O 4 ) ceramic as a rugged window and dome material for protecting EO/IR sensors operating from the UV to the mid-IR [2]. Spinel also has a superior optical properties compared to its competitors such as Sapphire and AlON.…”

Section: Introductionmentioning

confidence: 99%

Transparent ceramics for high-power solid-state lasers

Sanghera

Kim

Villalobos

et al. 2011

Laser Technology for Defense and Security VII

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We report results for high quality transparent ceramic window materials (spinel and β-SiC) and high power solid state laser materials (Yb:Y 2 O 3 and Yb:Lu 2 O 3 ). Spinel ceramic demonstrates a record low absorption loss of 6 ppm/cm at 1.06 μm. We also report optical transparency from a β-SiC ceramic fabricated by the Spark Plasma Sintering technique. Capability of fabricating various shape and size of spinel ceramics is also demonstrated. We report lasing in hot pressed Yb 3+ :Y 2 O 3 and Yb 3+ :Lu 2 O 3 ceramic made from co-precipitated powder. Highest output power and efficiency from heavily doped Yb 3+ doped Lu 2 O 3 ceramic are reported.

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VIS-IR transmitting windows

Cited by 23 publications

References 0 publications

Ultrafast Z-scan measurements of nonlinear optical constants of window materials at 772, 1030, and 1550 nm

Ultrafast Z-scan measurements of nonlinear optical constants of window materials at 772, 1030, and 1550 nm

Structural and fluorescence properties of Ho3+/Yb3+ doped germanosilicate glasses tailored by Lu2O3

Transparent ceramics for high-power solid-state lasers

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