Results 71 to 80 of about 2,104,280 (273)

Generation of 35-fs pulses from a Kerr lens mode-locked Yb:Lu2O3 thin-disk laser.

open access: yesOptics Express, 2017
We investigate Kerr lens mode locking of Yb:Lu2O3 thin-disk laser oscillators operating in the sub-100-fs regime. Pulses as short as 35 fs were generated at an average output power of 1.6 W. These are the shortest pulses directly emitted from a thin-disk
C. Paradis   +5 more
semanticscholar   +1 more source

Oxygen Abundances in Nearby FGK Stars and the Galactic Chemical Evolution of the Local Disk and Halo [PDF]

open access: yes, 2013
Atmospheric parameters and oxygen abundances of 825 nearby FGK stars are derived using high-quality spectra and a non-LTE analysis of the 777 nm O I triplet lines. We assign a kinematic probability for the stars to be thin-disk (P1), thick-disk (P2), and
Lambert, D. L.   +2 more
core   +2 more sources

Magnetically Torqued Thin Accretion Disks [PDF]

open access: yesThe Astrophysical Journal, 2007
9 sharper figs, updated ...
S. Rappaport, W. Kluzniak
openaire   +4 more sources

Carbon, nitrogen and $\alpha$-element abundances determine the formation sequence of the Galactic thick and thin disks

open access: yes, 2015
Using the DR12 public release of APOGEE data, we show that thin and thick disk separate very well in the space defined by [$\alpha$/Fe], [Fe/H] and [C/N].
Gilmore, G., Masseron, T.
core   +1 more source

Black Hole Accretion with Saturated Magnetic Pressure and Disk Wind

open access: yesThe Astrophysical Journal, 2023
We construct an analytical black hole accretion disk model that incorporates both magnetic pressure and disk wind, which are found to be important from numerical simulations.
Jiahui Huang   +3 more
doaj   +1 more source

Numerical and Experimental Analysis of Yb:YAG Thin Disk Regenerative Amplifier

open access: yesIEEE Photonics Journal, 2021
We present an numerical and experimental analysis of a Yb:YAG thin disk regenerative amplifier. Group velocity dispersion, third order dispersion, and self-phase modulation (SPM) effects are considered in the simulations of the amplification process.
Di Sun   +6 more
doaj   +1 more source

Deformable mirrors for intra-cavity use in high-power thin-disk lasers.

open access: yesOptics Express, 2017
We present deformable mirrors for the intra-cavity use in high-power thin-disk laser resonators. The refractive power of these mirrors is continuously adaptable from -0.7 m-1 to 0.3 m-1, corresponding to radii of curvature ranging between 2.86 m (convex)
S. Piehler   +5 more
semanticscholar   +1 more source

Investigating the Lower Limit of Metallicity for the Galactic Thin Disk

open access: yesThe Astrophysical Journal
We explore the metal-poor regime of the Galactic disk on the distribution of stars in the [ α /M]– V _ϕ plane, to identify the most metal-poor thin disk (MPTnD) stars belonging to the low- α sequence.
Guozhen Hu   +3 more
doaj   +1 more source

Vertical Structure of the Milky Way Disk with Gaia DR3

open access: yesGalaxies, 2023
Using a complete sample of about 330,000 dwarf stars, well measured by Gaia DR3, limited to the galactic north and south solid angles |b|700 pc and points to the presence of more stars beyond the thin disk that cannot be accounted for by the two-disk ...
Katherine Vieira   +3 more
doaj   +1 more source

A close view on the protoplanetary disk in the Bok globule CB26 [PDF]

open access: yes, 2001
We present new sub-arcsecond-resolution near-infrared polarimetric imaging and millimetre interferometry data on the circumstellar disk system in the Bok globule CB26.
Launhardt, R.   +2 more
core   +2 more sources

Home - About - Disclaimer - Privacy