Results 1 to 10 of about 288,000 (298)

Dual-comb thin-disk oscillator [PDF]

open access: yesNature Communications, 2022
Achieving high output powers in dual-comb sources is important for possible applications like deep UV high resolution spectroscopy. Here the authors demonstrate a fully passive scheme of generating a set of high-power dual-combs from a thin-disc gain ...
Kilian Fritsch   +7 more
doaj   +2 more sources

High-repetition-rate and high-power efficient picosecond thin-disk regenerative amplifier [PDF]

open access: goldHigh Power Laser Science and Engineering, 2023
We present an effective approach to realize a highly efficient, high-power and chirped pulse amplification-free ultrafast ytterbium-doped yttrium aluminum garnet thin-disk regenerative amplifier pumped by a zero-phonon line 969 nm laser diode.
Sizhi Xu   +11 more
doaj   +2 more sources

Structural Parameters of Thin and Thick Disks in Edge-on Disk Galaxies [PDF]

open access: bronze, 2006
We analyze the global structure of 34 late-type, edge-on, undisturbed, disk galaxies spanning a wide range of mass. We measure structural parameters for the galaxies using two-dimensional least-squares fitting to our $R$-band photometry. The fits require
Peter Yoachim, Julianne J. Dalcanton
openalex   +3 more sources

Fluorescence Radiation and Thermal Effect at the Edge of the Disk-Shaped Laser Crystal

open access: yesInternational Journal of Optics, 2022
The fluorescence radiation property at the edge of the thin disk crystal is very important to the design of thin disk lasers. In order to study this effect, in this paper, we established a theoretical model to describe the edge fluorescence radiation ...
Yongqian Chen   +5 more
doaj   +1 more source

High-efficiency 100-W Kerr-lens mode-locked Yb:YAG thin-disk oscillator

open access: yesFrontiers in Physics, 2023
We demonstrate a Kerr-lens mode-locked femtosecond Yb:YAG thin-disk oscillator and investigate the approach to increase the optical-to-optical efficiency based on the scheme of direct multiple passes of the laser beam through the thin-disk medium.
Hongshan Chen   +13 more
doaj   +1 more source

Vertical Density Distribution of the Galaxy from Star Count Analysis [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
The five space density distribution D(z) with distance perpendicular to the Galactic plane were combined. The scale heights and the local densities at z = 0 of the thin disk, thick disk, and the halo components were estimated from the nonlinear least ...
Young-Jong Sohn
doaj   +1 more source

Thick-disk evolution induced by the growth of an embedded thin disk [PDF]

open access: yes, 2010
We perform collisionless N-body simulations to investigate the evolution of the structural and kinematical properties of simulated thick disks induced by the growth of an embedded thin disk.
Amina Helmi   +52 more
core   +11 more sources

Measuring the Dust Masses of Protoplanetary Disks in Lupus with ALMA: Evidence That Disks Can Be Optically Thick at 3 mm

open access: yesThe Astrophysical Journal, 2022
Accurate disk mass measurements are necessary to constrain disk evolution and the timescale of planet formation, but such measurements are difficult to make and are very dependent on assumptions. Here, we look at the assumption that the disk is optically
Z. Xin   +4 more
doaj   +1 more source

Calculation of electrical impedance of oscillating piezoceramic disk in the area of high frequencies

open access: yesТехнічна інженерія, 2020
The relevance of the use of various functional elements of piezoelectronics in power and information systems is due primarily to their high reliability. As a result of research of mathematical model of the real device it is possible to define a specific ...
K.V. Bazilo   +3 more
doaj   +1 more source

THE MAGNESIUM ABUNDANCE IN THE THIN AND THICK DISK OF THE GALAXY

open access: yesOdessa Astronomical Publications, 2017
The chemical evolution of the thin and thick disk of our Galaxy was investigated in framework of the opened model with gas inflow. It was supposed that the thin and thick disks separate chemically and spatially and have different evolution timescales ...
T. V. Nykytyuk, T. V. Mishenina
doaj   +1 more source

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