Results 1 to 10 of about 2,101,430 (372)

Dual-comb thin-disk oscillator [PDF]

Nature 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, Tobias Hofer, Jonathan Brons, Maksim Iandulskii, Ka Fai Mak, Zaijun Chen, Nathalie Picqué, Oleg Pronin   +7 more
doaj   +7 more sources

110 MW Thin-Disk Oscillator [PDF]

EPJ Web of Conferences, 2022
A compact Kerr-lens mode-locked thin-disk oscillator reproducibly delivering 110 MW output peak power, the highest among all oscillators, is reported. This simple and stable femtosecond oscillator delivering a unique combination of high average power (202 W) and peak power, is an ideal driver and an important milestone for the development of extreme ...
Goncharov Semyon, Fritsch Kilian, Pronin Oleg   +2 more
doaj   +4 more sources

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

The Astrophysical Journal, 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, Ardi, Barnes, Barnes, Baugh, Belokurov, Binney, Bournaud, Buitrago, Bullock, Buser, Callegari, Chiba, Elmegreen, Ferguson, Ferguson, Font, Gauthier, Girard, Hayashi, Hopkins, Huang, Ibata, Ibata, Ivezić, Jurić, Kalirai, Kazantzidis, Kazantzidis, Kazantzidis, Kazantzidis, Majewski, Malin, Martínez-Delgado, Matthews, Mayer, Navarro, Newberg, Peng, Purcell, Sellwood, Shang, Sharma, Stadel, Stelios Kazantzidis, Tormen, Vitvitska, White, Yanny, Yoachim, Yoachim, Zeldovich, Álvaro Villalobos   +52 more
core   +7 more sources

The change from accretion via a thin disk to a coronal flow: Dependence on the viscosity of the hot gas [PDF]

, 2001
We study the transition from the geometrically thin disk to the hot coronal flow for accretion onto black holes. The efficiency of evaporation determines the truncation of the geometrically thin disk as a function of the black hole mass and the mass flow
E. Meyer‐Hofmeister, F. Meyer
openalex   +4 more sources

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

The Astronomical Journal, 2005
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
Binggeli B., Buser R., de Grijs R., de Grijs R., Fuhrmann K., Gilmore G., Julianne J. Dalcanton, Karachentsev I. D., Karachentsev I. D., Kudrya Y. N., Pagel B. E. J., Peter Yoachim, Pohlen M., Robin A. C., Shaw M. A., Staveley-Smith L., van der Kruit P. C., van der Kruit P. C., van der Kruit P. C., van der Kruit P. C., van Dokkum P. G.   +20 more
core   +4 more sources

Abundance trends in the thin and thick disks [PDF]

, 2004
Review article presented at the ESO-ARCETRI workshop on: Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites (September 13-17 2004), To be published in "ESO Astrophysics Symposia", Editors: Luca Pasquini and Sofia Randich, 6 pages, 4 figures (one in colour)
S. Feltzing
openalex   +5 more sources

Are there thin accretion disks?

, 2004
Total and internal energy requirements set constraints on the allowable temperature on the disk. In a gas pressure dominated disk, they lead to a cooling rate that decreases with temperature. These findings are used to show that the flow is mildly supersonic, with the azimuthal Mach number moderately exceeding one in a large extent of the disk. Only in
Cesar Meirelles Filho, Celso Lima, H. Miyake   +2 more
openalex   +4 more sources

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

International 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, Si Chen, Yuzhi Huang, Xianshi Jia, Hantian Chen, Xiwang Wu   +5 more
doaj   +1 more source

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

Frontiers 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, Lisong Yan, Heyan Liu, Jingjie Hao, Tingting Yang, Hongyu Liu, Jin Zhang, Quanming Li, Hailin Wang, Guangzhi Zhu, Xiao Zhu, Hongwen Xuan, Qing Wang, Jinwei Zhang   +13 more
doaj   +1 more source

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

Journal 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