Results 51 to 60 of about 312,210 (236)

A Single Laser System for Ground-State Cooling of 25-Mg+

, 2011
We present a single solid-state laser system to cool, coherently manipulate and detect $^{25}$Mg$^+$ ions. Coherent manipulation is accomplished by coupling two hyperfine ground state levels using a pair of far-detuned Raman laser beams.
A. Friedenauer, A. Friedenauer, A.L. Wolf, B. Hemmerling, C. Langer, C. Monroe, C.-H. Chang, C.F. Roos, C.W. Chou, D. Leibfried, D. Nigg, D.J. Wineland, D.J. Wineland, E.A. Donley, E.J. Salumbides, F. Gebert, G. Kirchmair, H. Häffner, I. V. Sherstov, J. Eschner, J.I. Cirac, K. Kim, N. Kjærgaard, P. O. Schmidt, P.F. Staanum, P.J. Lee, P.O. Schmidt, Q.A. Turchette, R. Blatt, R. Gerritsma, R.A. Negres, R.J. Epstein, R.W.P. Drever, S. Olmschenk, T. Rosenband, T. Schaetz, T. Schneider, T.W. Hänsch, W. Alt, W. Paul, W.M. Itano, Y. Wan   +41 more
core   +1 more source

Two-photon and EIT-assisted Doppler cooling in a three-level cascade system [PDF]

, 2006
Laser cooling is theoretically investigated in a cascade three-level scheme, where the excited state of a laser-driven transition is coupled by a second laser to a top, more stable level, as for alkali-earth atoms.
American Physical Society, Arimondo, Ennio, Morigi, Giovanna   +2 more
core   +3 more sources

2D transverse laser cooling of a hexapole focused beam of cold BaF molecules

Communications Physics
Laser cooling of molecules is a powerful technique for producing cold, slow beams for precision measurements and quantum control, yet its implementation remains challenging due to molecular complexity.
J. W. F. van Hofslot, I. E. Thompson, A. Touwen, N. Balasubramanian, R. Bause, H. L. Bethlem, A. Borschevsky, T. H. Fikkers, S. Hoekstra, S. A. Jones, J. E. J. Levenga, M. C. Mooij, H. Mulder, B. A. Nijman, E. H. Prinsen, B. J. Schellenberg, L. van Sloten, R. G. E. Timmermans, W. Ubachs, J. de Vries, L. Willmann, On behalf of the NL-eEDM collaboration   +21 more
doaj   +1 more source

Disk Laser Welding of Car Body Zinc Coated Steel Sheets / Spawanie Laserem Dyskowym Blach Ze Stali Karoseryjnej Ocynkowanej

Archives of Metallurgy and Materials, 2015
Autogenous laser welding of 0.8 mm thick butt joints of car body electro-galvanized steel sheet DC04 was investigated. The Yb:YAG disk laser TruDisk 3302 with the beam spot diameter of 200 μm was used.
Lisiecki A., Burdzik R., Siwiec G., Konieczny Ł., Warczek J., Folęga P., Oleksiak B.   +6 more
doaj   +1 more source

The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier

Micromachines, 2023
Laser diode pumped solid-state lasers (DPSSLs) have been widely used in many fields, and their thermal effects have attracted more and more attention. The laser diode (LD) side-pumped amplifier, as a key component of DPSSLs, is necessary for effective ...
Shuzhen Nie, Tianzhuo Zhao, Xiaolong Liu, Pubo Qu, Yuchuan Yang, Yuheng Wang   +5 more
doaj   +1 more source

Cool Laser Pulses [PDF]

Laser Technik Journal, 2014
AbstractDuring the past decades pulsed laser systems have motivated many novel laser material applications. Nowadays ultrashort pulse (USP) lasers are routinely used for machining and processing high‐tech materials like glass, sapphire or ceramics and allow the production of small and powerful smart phones, high efficient solar cells or medical devices.
openaire   +1 more source

Vibrational branching ratios and hyperfine structure of $^{11}$BH and its suitability for laser cooling [PDF]

, 2014
The simple structure of the BH molecule makes it an excellent candidate for direct laser cooling. We measure the branching ratios for the decay of the ${\rm A}^{1}\Pi (v'=0)$ state to vibrational levels of the ground state, ${\rm X}^{1}\Sigma^{+}$, and ...
Hendricks, R. J., Holland, D. A., Sauer, B. E., Tarbutt, M. R., Truppe, S.   +4 more
core   +2 more sources

Pulpal Thermal Changes following Er-YAG Laser Debonding of Ceramic Brackets

The Scientific World Journal, 2014
Lasers are effective in debonding ceramic brackets. Unfortunately, while reducing the adhesive bond strength, lasers are also reported to increase pulpal temperature. The aim of this study was to evaluate the shear bond strengths and temperature increase
Didem Nalbantgil, Murat Tozlu, Mehmet Oguz Oztoprak   +2 more
doaj   +1 more source

Numerical Simulation of the Temperature Distribution and Solid-Phase Evolution in the LENS™ Process [PDF]

, 2006
A three-dimensional finite element model was developed and applied to analyze the temperature and phase evolution in deposited stainless steel 410 (SS410) during the Laser Engineered Net Shaping (LENSTM) rapid fabrication process.
Felicelli, S., Gooroochurn, Y., Horstemeyer, M. F., Wang, L., Wang, P. T.   +4 more
core   +1 more source

Enhancement of laser cooling by the use of magnetic gradients

, 2011
We present a laser cooling scheme for trapped ions and atoms using a combination of laser couplings and a magnetic gradient field. In a Schrieffer-Wolff transformed picture, this setup cancels the carrier and blue sideband terms completely resulting in ...
A Albrecht, A Retzker, C Wunderlich, M B Plenio, Retzker A, Wineland D J, Wineland D J, Wunderlich C   +7 more
core   +1 more source