Academic literature on the topic 'Laser cooling'

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Journal articles on the topic "Laser cooling"

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SUGIYAMA, Kazuhiko, and Jun YODA. "Laser cooling." SHINKU 32, no. 6 (1989): 537–44. http://dx.doi.org/10.3131/jvsj.32.537.

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Wineland, David J., and Wayne M. Itano. "Laser Cooling." Physics Today 40, no. 6 (June 1987): 34–40. http://dx.doi.org/10.1063/1.881076.

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SHIMIZU, Fujio. "On Laser Cooling." Review of Laser Engineering 29, no. 12 (2001): 765–66. http://dx.doi.org/10.2184/lsj.29.765.

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Padua, S., C. Xie, R. Gupta, H. Batelaan, T. Bergeman, and H. Metcalf. "Transient laser cooling." Physical Review Letters 70, no. 21 (May 24, 1993): 3217–20. http://dx.doi.org/10.1103/physrevlett.70.3217.

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Steane, Andrew, and Christopher Foot. "Multiphoton laser cooling." Nature 347, no. 6289 (September 1990): 127–28. http://dx.doi.org/10.1038/347127a0.

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Rosa, M. D. "Laser-cooling molecules." European Physical Journal D 31, no. 2 (November 2004): 395–402. http://dx.doi.org/10.1140/epjd/e2004-00167-2.

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Nie, Shuzhen, Tianzhuo Zhao, Xiaolong Liu, Pubo Qu, Yuchuan Yang, and Yuheng Wang. "The Effect of Cooling Layer Thickness and Coolant Velocity on Crystal Thermodynamic Properties in a Laser Amplifier." Micromachines 14, no. 2 (January 23, 2023): 299. http://dx.doi.org/10.3390/mi14020299.

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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 heat dissipation. In this paper, instead of the common thermal analysis based only on a crystal rod model, a fluid–structure interaction model including a glass tube, cooling channel, coolant and crystal rod is established in numerical simulation using ANSYS FLUENT for the configuration of an LD array side-pumped laser amplifier. The relationships between cooling layer thickness, coolant velocity and maximum temperature, maximum equivalent stress, inlet pressure and the convective heat transfer coefficient are analyzed. The results show that the maximum temperature (or maximum equivalent stress) decreases with the increase in the coolant velocity; at low velocity, a larger cooling layer thickness with more coolant is not conductive enough for improved heat dissipation of the crystal rod; at high velocity, when the cooling layer thickness is above or below 1.5 mm, the influence of the cooling layer thickness on the maximum temperature can be ignored; and the effect of the cooling layer thickness on the maximum equivalent stress at high velocity is not very significant. The comprehensive influence of various factors should be fully considered in the design process, and this study provides an important reference for the design and optimization of a laser amplifier and DPSSL system.
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Ye, Zhibin, Xiaolong Zhou, Shu Jiang, Meng Huang, Fei Wu, and Dongge Lei. "Immersed liquid cooling Nd:YAG slab laser oscillator." Chinese Optics Letters 21, no. 8 (2023): 081401. http://dx.doi.org/10.3788/col202321.081401.

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Stenholm, S. "Laser cooling and trapping." European Journal of Physics 9, no. 4 (October 1, 1988): 242–49. http://dx.doi.org/10.1088/0143-0807/9/4/001.

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Aspect, A., R. Bonifacio, F. Casagrande, and L. A. Lugiato. "Bistability in Laser Cooling." Europhysics Letters (EPL) 7, no. 6 (November 15, 1988): 499–504. http://dx.doi.org/10.1209/0295-5075/7/6/004.

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Dissertations / Theses on the topic "Laser cooling"

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Chen, Ruiping. "Laser cooling of atoms for ultracold cooling." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479242.

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Hillenbrand, Gerd. "Laser cooling of atoms." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259952.

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Steane, A. M. "Laser cooling of atoms." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315817.

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Rayner, Anton. "Laser cooling of solids /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16448.pdf.

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Zhelyazkova, Valentina. "Laser cooling of CaF molecules." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24740.

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Cold and ultracold molecules are highly desirable for a diverse range of applications in physics and chemistry such as precision measurements, tests of fundamental physics, quantum simulation and information processing, quantum chemistry, and the physics of strongly correlated quantum matter. Laser cooling is usually infeasible in molecules because their rotational and vibrational transitions make is difficult to come up with a closed scattering cycle. Recently, a narrow range of diatomic molecules, one of which is CaF, has been shown to possess a convenient electronic structure and a highly-diagonal Franck-Condon matrix and thus be amenable to laser cooling. This thesis describes experiments on laser cooling of CaF radicals produced in a supersonic source. We first investigate the increased fluorescence when multi-frequency resonant light excites the molecules from the four hyperfine levels of the ground X²Σ+(N = 1, v = 0) state to the first excited A²π½(J' = 1=2; v' = 0) state. The number of photons scattered per molecule increases significantly from one or two in the single frequency case to more than 50 before the molecules get pumped into the X²Σ+(N = 1; v = 1) state. We demonstrate laser cooling and slowing of CaF using counter-propagating laser light which causes the molecules to scatter more than a thousand photons on the X (N = 1, v = 0, 1) <->A (J' = 1=2; v' = 0) transition. The effect of the laser cooling is to slow a group of molecules from 600 ms-1 to about 580 ms-1 and to narrow their velocity distribution from an initial temperature of 3 K down to 300 mK. In addition, chirping the frequency of the cooling light to keep it on resonance with the decelerating molecules doubles the deceleration and further compresses the velocity distribution. The effect of the laser cooling is limited by the optical pumping of molecules in the X (N = 1, v = 2) state.
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Matsushima, Aki. "Transverse laser cooling of SrF." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/17839.

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This thesis discusses an experiment, which has demonstrated transverse laser cooling of a pulsed supersonic beam of strontium monofluoride (SrF) molecules. Producing ultracold molecules is important because they could advance many fields including many-body physics, quantum chemistry and precision measurements to explore fundamental forces in nature. Direct laser cooling of molecules is a new and promising way to produce molecules with temperatures in the sub-millikelvin range. In the experiment, SrF molecules produced from a pulsed supersonic source were cooled in the transverse direction using light from just two lasers. The molecular beam brightness was increased by about 20%. I discuss the detailed experimental setup, laser system and data analysis. I also present several theoretical models, which give insight into the cooling experiment. Finally, I discuss improvements to this experiment, which should enable higher yields of ultracold molecules to be produced.
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Cerrillo, Moreno Javier. "Laser cooling of quantum systems." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/12788.

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In this thesis novel methods for the laser cooling of quantum systems are presented. The use of quantum interference allows for the tailored cancelation of heating processes, so that an approximation to a cooling operator is possible that does not rely on the rotating wave approximation. This makes these schemes considerably faster and more efficient than existing ground state cooling methods, and allow for a significant relaxation of current experimental constraints. Several approaches are investigated in different systems. On the one hand, a special laser configuration, applicable to trapped ions, atoms or cantilevers, generates a double dark state that eliminates both the blue sideband and the carrier transition. As a consequence, vanishing phonon occupation up to first order in the perturbative expansion is achieved. Underlying this scheme is a combined action of two cooling schemes which makes the proposal very stable under parameter fluctuations. Its suitability as a cooling scheme for several ions in a trap or for a cloud of atoms in a dipole trap is shown. On the other hand, a pulsed cooling scheme for optomechanical systems is presented. It can be implemented for both strongly and weakly coupled optomechanical systems in both weakly and highly dissipative cavities. Its underlying mechanism is based on interferometric control of optomechanical interactions, and its efficiency is demonstrated with pulse sequences that are obtained by using methods from optimal control. Finally, it is shown how this pulsed method can be combined with continuous measurement to drive mechanical oscillators to highly squeezed steady states. Its mechanism relies on the modification of the dissipation and measurement terms, which drive the system towards a specific quadrature eigenstate. The scheme is robust to measurement inefficiencies and works also with highly dissipative cavities, which makes it accessible to implementation with state of the art technology.
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Rupper, Greg. "Theory of Semiconductor Laser Cooling." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194520.

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Recently laser cooling of semiconductors has received renewed attention, with the hope that a semiconductor cooler might be able to achieve cryogenic temperatures. In order to study semiconductor laser cooling at cryogenic temperatures, it is crucial that the theory include both the effects of excitons and the electron-hole plasma. In this dissertation, I present a theoreticalanalysis of laser cooling of bulk GaAs based on a microscopic many-particle theory of absorptionand luminescence of a partially ionized electron-hole plasma.This theory has been analyzed from a temperature 10K to 500K. It is shown that at high temperatures (above 300K), cooling can be modeled using older models with a few parameter changes. Below 200K, band filling effects dominate over Auger recombination. Below 30K excitonic effects are essential for laser cooling. In all cases, excitonic effects make cooling easier then predicted by a free carrier model.The initial cooling model is based on the assumption of a homogeneous undoped semiconductor. This model has been systematically modified to include effects that are present in real laser cooling experiments. The following modifications have been performed. 1) Propagation and polariton effects have been included. 2) The effect of p-doping has been included. (n-doping can be modeled in a similar fashion.) 3) In experiments, a passivation layer is required to minimize non-radiative recombination. The passivation results in a npn heterostructure. The effect of the npn heterostructure on cooling has been analyzed. 4) The effect of a Gaussian pump beam was analyzed and 5) Some of the parameters in the cooling model have a large uncertainty. The effect of modifying these parameters has been analyzed.Most of the extensions to the original theory have only had a modest effect on the overall results. However we find that the current passivation technique may not be sufficient to allow cooling. The passivation technique currently used appears to be very good at low densities, but loses some of it's effectiveness at the moderately high densities required for laser cooling. We suggest one possible solution that might enable laser cooling. If the sample can be properly passivated, then we expect laser cooling to be possible.
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Clark, Joanne Louise. "Laser cooling in the condensed phase." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266518.

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Cooper, Catherine J. "Laser cooling and trapping of atoms." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308685.

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Books on the topic "Laser cooling"

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Peter, Van der Straten, ed. Laser cooling and trapping. New York: Springer, 1999.

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Metcalf, Harold J., and Peter van der Straten. Laser Cooling and Trapping. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1470-0.

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Natarajan, Vasant. Laser cooling and trapping. Saarbrücken: LAP LAMBERT Academic Publishing, 2017.

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Epstein, Richard I. Laser refrigeration of solids: 23-24 January 2008, San Jose, California, USA. Bellingham, Wash: SPIE, 2008.

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library, Wiley online, ed. Optical refrigeration: Science and applications of laser cooling of solids. Weinheim: Wiley-VCH, 2009.

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Vazquez-Carson, Sebastian Francisco. Transverse Laser Cooling of Calcium Monohydride Molecules. [New York, N.Y.?]: [publisher not identified], 2022.

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Epstein, Richard I. Laser refrigeration of solids II: 28-29 January 2009, San Jose, California, United States. Bellingham, Wash: SPIE, 2009.

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Epstein, Richard I., and Mansoor Sheik-Bahae. Laser refrigeration of solids V: 25-26 January 2012, San Francisco, California, United States. Bellingham, Wash: SPIE, 2012.

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Epstein, Richard I. Laser refrigeration of solids IV: 26-27 January 2011, San Francisco, California, United States. Edited by SPIE (Society). Bellingham, Wash: SPIE, 2011.

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Epstein, Richard I. Laser refrigeration of solids III: 28 January 2010, San Francisco, California, United States. Edited by SPIE (Society). Bellingham, Wash: SPIE, 2010.

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Book chapters on the topic "Laser cooling"

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Mendonça, J. T., and Hugo Terças. "Laser Cooling." In Physics of Ultra-Cold Matter, 9–34. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5413-7_2.

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Meystre, Pierre. "Laser Cooling." In Quantum Optics, 261–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76183-7_9.

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Williams, M. R., C. Xie, W. F. Buell, T. Bergeman, and H. Metcalf. "Laser Cooling with Intense Laser Fields." In Coherence and Quantum Optics VII, 377–78. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9742-8_62.

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Basdevant, Jean-Louis, and Jean Dalibard. "Laser Cooling and Trapping." In The Quantum Mechanics Solver, 199–209. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13724-3_20.

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Basdevant, Jean-Louis, and Jean Dalibard. "Laser Cooling and Trapping." In Advanced Texts in Physics, 217–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04277-9_26.

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Barndorff-Nielsen, O. E., and F. E. Benth. "Laser cooling and stochastics." In State of the art in probability and statistics, 50–71. Beachwood, OH: Institute of Mathematical Statistics, 2001. http://dx.doi.org/10.1214/lnms/1215090062.

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Adams, Charles, and Ifan Hughes. "Laser Cooling and Trapping." In Handbook of Laser Technology and Applications, 127–38. 2nd ed. 2nd edition. | Boca Raton : CRC Press, 2021– |: CRC Press, 2021. http://dx.doi.org/10.1201/9781003130123-8.

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Minty, Michiko G., and Frank Zimmermann. "Cooling." In Particle Acceleration and Detection, 263–300. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-08581-3_11.

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AbstractMany applications of particle accelerators require beam cooling, which refers to a reduction of the beam phase space volume or an increase in the beam density via dissipative forces. In electron and positron storage rings cooling naturally occurs due to synchrotron radiation, and special synchrotron-radiation damping rings for the production of low-emittance beams are an integral part of electron-positron linear colliders. For other types of particles different cooling techniques are available. Electron cooling and stochastic cooling of hadron beams are used to accumulate beams of rare particles (such as antiprotons), to combat emittance growth (e.g., due to scattering on an internal target), or to produce beams of high quality for certain experiments. Laser cooling is employed to cool ion beams down to extremely small temperatures. Here the laser is used to induce transitions between the ion electronic states and the cooling exploits the Dopper frequency shift. Electron beams of unprecedentedly small emittance may be obtained by a different type of laser cooling, where the laser beam acts like a wiggler magnet. Finally, designs of a future muon collider rely on the principle of ionization cooling. Reference [1] gives a brief review of the principal ideas and the history of beam cooling in storage rings; a theoretical dicussion and a few practical examples can be found in [2].
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Hammes, Stefan. "Cooling Techniques." In Laser and IPL Technology in Dermatology and Aesthetic Medicine, 345–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-03438-1_26.

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Chu, S., M. G. Prentiss, A. E. Cable, and J. E. Bjorkholm. "Laser Cooling and Trapping of Atoms." In Laser Spectroscopy VIII, 58–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-540-47973-4_15.

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Conference papers on the topic "Laser cooling"

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Wieman, C. E., and R. N. Watts. "Cooling cesium atoms using diode lasers." In International Laser Science Conference. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.wc4.

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We have cooled and stopped a beam of cesium atoms using frequency chirped diode lasers. In this technique, a moving atom absorbs and reemits many photons from a counter propagating laser that is frequency swept to keep it in resonance with an atomic transition. The resulting momentum transfer slows the atom. The basic approach is identical to that developed by Hall and co-workers, however, the use of diode lasers allows us to obtain the necessary frequency modulation simply by sweeping the laser injection current. We use two diode lasers tuned to each of the 6s hyperfine ground state levels to drive the 6s—6p3/2 transitions. Each laser is simultaneously swept over the Doppler profile of the 100°C thermal cesium beam to bring a substantial number to a stop. Using additional fast frequency modulation, the same lasers are used to probe the resulting velocity distribution. This technique allows us to bring ~106 atoms/cm3 to a temperature of 1 K. This method is an extremely simple and inexpensive way to produce cold atoms.
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Karapuzikov, Alexander, Anton Klimkin, Grigorii Kokhanenko, Tatiana E. Kuraeva, Alexei Kurjak, Alexei Lugovskoi, Alexei Markelov, Konstantin Osipov, Yurii Ponomarev, and Shuo Zhang. "Experimental comparison of mercury cadmium telluride photodetectors with nitrogen liquid cooling and thermoelectric cooling." In XV International Conference on Pulsed Lasers and Laser Applications, edited by Victor F. Tarasenko, Anton V. Klimkin, and Maxim V. Trigub. SPIE, 2021. http://dx.doi.org/10.1117/12.2616212.

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DeMille, D., E. S. Shuman, and J. F. Barry. "Laser Cooling of a Diatomic Molecule." In Laser Science. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/ls.2010.lthh1.

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Nemova, Galina, Elton Soares de Lima Filho, Sebastien Loranger, and Raman Kashyap. "Laser cooling with nanoparticles." In Photonics North 2012, edited by Jean-Claude Kieffer. SPIE, 2012. http://dx.doi.org/10.1117/12.2001317.

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Sheik-Bahae, M. "Laser cooling in solids." In 2007 Quantum Electronics and Laser Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/qels.2007.4431818.

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Porto, J. V., Saijun Wu, Roger Brown, and W. P. Phillips. "Multi-photon Laser Cooling." In Frontiers in Optics. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/fio.2010.stud3.

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Andre, L. B., L. Cheng, and S. C. Rand. "Laser Cooling of Sapphire." In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jtu3b.42.

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PILLET, P., M. VITEAU, A. CHOTIA, D. SOFIKITIS, M. ALLEGRINI, N. BOULOUFA, O. DULIEU, and D. COMPARAT. "LASER COOLING OF MOLECULES." In Proceedings of the XXI International Conference on Atomic Physics. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814273008_0028.

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Chu, Steven. "Laser cooling and trapping." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.tujj1.

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The purpose of this tutorial is to introduce the listener to the rapidly developing field of laser cooling and trapping. Doppler cooling is first discussed followed by the new mechanism of cooling based on ground-state energy level shifts in light fields with polarization gradients. Next, the basic concepts of magnetic traps, optical dipole force traps (optical tweezers), and the magnetooptic trap are considered. Selected uses of these traps and cooling techniques are given to elucidate the broad utility of these techniques.
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DeVoe, Ralph G. "Broadband stimulated laser cooling." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.tuvv2.

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A new method is proposed for laser cooling atoms with Doppler shifts an order of magnitude larger than the homogeneous linewidth of the atomic transition. Two traveling waves cross at a small angle and form standing waves whose wavelength is much longer than that of either traveling wave. This allows one to extend the region in which the laser cooling force is proportional to velocity. The resulting broadband stimulated cooling forces are predicted to stop 0.1% of the flux of a 500-K atomic sodium beam in a distance of 300 μm and a time of a few microseconds. This is more than 100 times faster than current methods. Numerical integration and the method of Gordon and Ashkin have been used to calculate the cooling forces which result when two traveling waves cross at an angle 2a. The stimulated cooling forces are reduced in intensity by sin2a but are proportional to velocity over an interval which is larger by 1/sin a. This allows one to stop a substantial fraction of an atomic beam without chirping the laser or Zeeman tuning the atoms.
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Reports on the topic "Laser cooling"

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Okamoto, Hiromi, and J. Wei. Theory of tapered laser cooling. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/658427.

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Bergquist, James C., John J. Bollinger, Wayne M. Itano, and David J. Wineland. Trapped Ions and Laser Cooling. Gaithersburg, MD: National Bureau of Standards, 1985. http://dx.doi.org/10.6028/nbs.tn.1086.

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Kaertner, F. X., and D. Kielpinski. Laser Cooling With Ultrafast Pulse Trains. Fort Belvoir, VA: Defense Technical Information Center, September 2005. http://dx.doi.org/10.21236/ada442315.

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Chu, Steven. Applications of Laser Cooling and Trapping. Fort Belvoir, VA: Defense Technical Information Center, July 2001. http://dx.doi.org/10.21236/ada397410.

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Kielpinski, David. Laser Cooling with Ultrafast Pulse Trains. Fort Belvoir, VA: Defense Technical Information Center, July 2010. http://dx.doi.org/10.21236/ada524694.

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Kielpinski, David. Laser Cooling with Ultrafast Pulse Trains. Fort Belvoir, VA: Defense Technical Information Center, August 2011. http://dx.doi.org/10.21236/ada547504.

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Wineland, David J. Trapped ions and laser cooling II :. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nist.tn.1324.

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Bergquist, James Charles. Trapped ions and laser cooling IV :. Gaithersburg, MD: National Bureau of Standards, 1996. http://dx.doi.org/10.6028/nist.tn.1380.

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Bergquist, James C., John J. Bollinger, Wayne M. Itano, and David J, editors Wineland. Trapped ions and laser cooling, VI :. Gaithersburg, MD: National Institute of Standards and Technology, 2002. http://dx.doi.org/10.6028/nist.tn.1523.

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Bergquist, James C., John J. Bollinger, Wayne M. Itano, and David J, editors Wineland. Trapped ions and laser cooling, V :. Gaithersburg, MD: National Institute of Standards and Technology, 2002. http://dx.doi.org/10.6028/nist.tn.1524.

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