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Showing 1 to 20 of 154 for “"Yb"”.
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High-Energy YB-Doped Femtosecond Fiber Lasers
… phase shift, by replacing the short high-doped Yb3+ fiber with a long low-doped one. This results in an increase of the peak power by a factor that depends on the ratio between the gain coefficient of the high- and low-doped Yb3+ fiber. The length of the nonlinear section is kept unchanged by …
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Search for non-yrast states in ¹⁶°Yb
… non-yrast states of the even-even nucleus ¹⁶⁰Yb populated through the electron capture or β⁺-decay of ¹⁶⁰Lu. The radioactive ¹⁶⁰Lu source was created through the heavy-io fusion evaporation reaction ¹⁴⁴Sm(¹⁹F,3n) at a beam energy of 85 MeV. Both ϒ-ϒ coincidences and single ϒ rays were detected …
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Ultrafast Lasers and Amplifiers based on Yb-doped Gain Materials
… ultrafast lasers were developed: a Yb:KGW crystal regenerative amplifier, and an all-fiber oscillator. The regenerative amplifier is seeded by the front-end discussed. It operates at lower repetition rates, 1 kHz to 10 kHz, outputting 400 μJ pulses compressible to 250 fs. Further …
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Thermal conductivity of La₃-x̳Rx̳S₄ R=Sm, Yb, and Eu
<p>http://www.worldcat.org/oclc/19299785</p>
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Towards spin squeezed ¹⁷¹Yb atomic clock beyond the standard quantum limit
… of the ground state Zeeman sublevels of 171Yb, two different methods are utilized to perform a spin squeezing via coupling to 6s6p3P1 excited state. One method is measurement-based squeezing, which gave 2.1 dB of spin squeezing. The latter method, cavity feedback squeezing, achieved 8.6 dB …
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Loading a planar RF Paul Trap from a cold Yb⁺ source
… frequency, three-rod Paul Trap, loaded with Yb+ ions that have been photoionized from a source of neutral atoms, which were cooled in a magneto-optical trap. Planar ion traps have only recently been successfully loaded[1], and never from a cold ion source. Additionally, ionizing directly from …
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3 GHz Yb-fiber laser based femtosecond sources and frequency comb
… etc. First, a 3-GHz fundamentally mode-locked Yb-fiber laser is demonstrated with the highest rep-rate among all femtosecond Yb-fiber lasers to date. We then numerically and experimentally study the optimization of femtosecond YDFAs in order to achieve both high-quality and high-power …
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Effects of size and surface on optical properties of NaYF4:Yb,Er Nanoparticles
… and surface on optical properties of hcp NaYF4:Yb,Er particles, which is one of the most efficient near infrared-to-visible UC materials. Room temperature emission spectra showed that for hcp NaYF4:Yb,Er nanoparticles with sizes from ~ 11 to 110 nm, the green intensity increased by 69 times and …
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High accuracy Yb optical lattice clock: frequency comparisons and contributions to International Atomic Time
L'abstract è presente nell'allegato / the abstract is in the attachment
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Quantenphasenübergänge in den Schwere-Fermionen-Systemen Yb(Rh_{1-x}M_x)_2Si_2 und CePd_{1-x}Rh_x
Die Betrachtung von Schwere-Fermionen-Systemen stellt ein wichtiges Themengebiet im Bereich der Festkörperphysik dar. Das Verhalten von Schwere-Fermionen-Systemen wird durch die starken Korrelationen der magnetischen Momente der ungepaarten Spins der f-Elektronen bestimmt. Experimentell zugängliche …
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Besetzte und unbesetzte elektronische Struktur von geordneten Dünnschichtverbindungen der Seltenen Erden Eu und Yb mit den Übergangsmetallen Pd und Ni
… compounds of the rare-earth metals (RE) Eu and Yb with the transition metals Pd and Ni. The compounds were prepared in-situ as epitaxial thin films on single-crystalline substrates. For comparison, the experiments were extended to a Ba/Pd compound, which was prepared in the same way. All samples …
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The N-terminal Domain of the Y-box Binding Protein YB-1 Plays a Major Role in Cell Proliferation and Apoptosis
<p>Y-box binding protein, YB-1, is a member of the cold shock domain superfamily of proteins. It is involved in a plethora of cellular functions, including cell proliferation. The molecular mechanisms governing the involvement of YB-1 in cell proliferation are still unclear. Earlier studies done in …
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Y-box binding protein-1 (YB-1) is a bio-marker of aggressiveness in breast cancer and is a potential target for therapeutic intervention
… he potential impact of Y-Box binding protein-1 (YB-1) as a marker of aggressiveness and cancer recurrence in breast malignancies by screening one of the largest tissue microarrays in North America. YB-1 is an oncogenic transcription/translation factor, which is over-expressed in the majority of …
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Y-box binding protein-1 (YB-1) is essential for the growth and survival of HER-2 over-expressing breast cancer cells
… factor Y-box binding protein-1 (YB-1) to be a novel substrate of AKT which binds to epidermal growth factor receptor (EGFR) and HER-2 promoters once phosphorylated (Wu J et al. 2006). YB-1 is over-expressed in approximately 40% of breast cancers; its expression is strongly …
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Strukturelle Ordnung und Unordnung in binären und ternären Verbindungen des Galliums mit Ytterbium und Palladium
… von den ternären Verbindungen des Systems Yb–Pd–Ga zu bekommen, wurden zunächst die Ordnungs- und Unordnungsbeziehungen sowie die chemische Bindung in den Kristallstrukturen binärer Pd–Ga- bzw. Yb–Ga-Verbindungen analysiert. Im Rahmen der phasenanalytischen Untersuchungen des binären …
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Applications of a three-body potential model and crystal field calculations to the simulation of EU³⁺, Er³⁺ and Yb³⁺ environments in PbO.SiO₂ glass
… different rare-earth ions (Eu 3+ -, Er 3+ - and Yb 3+ ) doped in lead silicate was performed using the three-body potential model. Although the differences in ionic radii, interionic distance and average coordination number between the three rare-earths was quite small, the three-body potential …
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Substitution and Disorder Effects in Ternary Intermetallics
… single crystals of Ln6W4-xAl43-yTx+y (Ln = Gd, Yb; T= Mn, Fe), LnCr2FexAl20-x (Ln = Yb, Gd), Sm1.33Pd3Ga8, and CeCo2-xMxAl8 (M = Mn, Fe, Ni; 0 ≤ x < 1). The reported compounds were grown via the flux growth method with the strategic synthetic parameters described. Correlations between the …
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The development of high power fibre chirped pulse amplification systems
… high optical conversion efficiency, ytterbium (Yb)-doped silica fiber represents an attractive medium for the generation and amplification of ultrashort optical pulses. Research interest in Yb-doped fiber chirped pulse amplifier (CPA) systems first appeared in the late 1990s. However, the …
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