نتایج جستجو برای: ytterbium

تعداد نتایج: 1316  

Journal: :Optics express 2009
S Chaitanya Kumar G K Samanta M Ebrahim-Zadeh

Characteristics of high-power, narrow-linewidth, continuous-wave (cw) green radiation obtained by simple single-pass second-harmonic-generation (SHG) of a cw ytterbium fiber laser at 1064 nm in the nonlinear crystals of PPKTP and MgO:sPPLT are studied and compared. Temperature tuning and SHG power scaling up to nearly 10 W for input fundamental power levels up to 30 W are performed. Various con...

Journal: :Optics letters 2009
W Guan J R Marciante

A high-power hybrid Brillouin/ytterbium fiber laser has been demonstrated with an output power of 1 W. The laser operates in the single-frequency regime with an optical signal-to-noise ratio greater than 55 dB in a 0.1 nm bandwidth.

Journal: :Fizika tverdogo tela 2023

The effect of standing waves charge density (Friedel oscillations) generated by an interface the metallic ytterbium nanofilm single-crystal silicon substrate type on work function nanolayers has been studied. It is shown that in range thicknesses from 0 to 8 monatomic layers, oscillating character. This feature dependence thickness a consequence fact change nonmonotonically power (momentum) ele...

Journal: :Acta Crystallographica 1962

Journal: :Applied Radiation and Isotopes 2021

175Yb is a radionuclide that can be generated by neutron capture on 174Yb and whose decay properties make it useful for developing therapeutic radiopharmaceuticals. As happens with many of the emerging radionuclides medical uses in recent years, its nuclear data were determined decades ago are not thoroughly documented nor accurate enough metrological purposes. The last reference half-life valu...

2015
Kenta Miura Kazusa Kano Yuki Arai Osamu Hanaizumi

Light-emitting ytterbium-doped tantalum-oxide thin films were prepared using a simple co-sputtering method for the first time. Sharp photoluminescence peaks having a wavelength of around 980 nm were observed from films annealed from 700 ̊C to 1000 ̊C for 10 to 40 min. The strongest intensity of the 980-nm peak was obtained from a film deposited using three ytterbium-oxide pellets and annealed at ...

2006
C. Fouassier Véronique Jubera

The luminescence of Yb in the oxyborate Li2Lu5O4(BO3)3 is reported. At low temperature, in addition to the usual ytterbium infrared emission, this phosphor presents an emission in the ultraviolet (λmax= 345 nm) which corresponds to the transition from the charge transfer state (O-Yb) to the 4f levels of Yb. The temperature quenching Tq50% is equal to 120K. The infrared emission studied at room ...

Journal: :Optics letters 2004
Nick G Usechak Govind P Agrawal Jonathan D Zuegel

We report a ytterbium fiber laser mode locked at its 281st harmonic, which corresponds to a repetition rate greater than 10 GHz. The laser produces linearly polarized, 2-ps pulses with up to 38-mW of average output power. The mode-locked pulses are tunable over a 58-nm window centered on 1053 nm.

Journal: :Journal of Alloys and Compounds 2022

Erbium/ytterbium-dopped Y0.9Er0.1−xYbxVO4 samples with x = 0, 0.01, 0.05 and 0.09 were synthesized by hydrothermal synthesis at basic pH urea addition. For comparison purposes, another sample 0 was also prepared the solgel method. X-ray diffraction patterns indexed on basis to a tetragonal symmetry of space group I41/amd Z 4 compatible zircon-type, in good agreement FTIR spectra. Additionally, ...

2008
Karla Fejfarová Rachid Essehli Brahim El Bali Michal Dušek

The title compound, NH(4)YbP(2)O(7), crystallizes in the KAlP(2)O(7) structure type and consists of distorted YbO(6) octa-hedra and bent P(2)O(7) (4-) diphosphate units forming together a three-dimensional network. There are channels in the structure running along the c axis, where the NH(4) (+) cations are located. They are connected via N-H⋯O hydrogen bonds to the terminal O atoms of the diph...

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