Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Wall, T E"'
We describe the properties of a continuous-wave room-temperature quantum cascade laser operating at the long wavelength of 17 $\mu$m. Long wavelength mid-infrared quantum cascade lasers offer new opportunities for chemical detection, vibrational spec
Externí odkaz:
http://arxiv.org/abs/2310.16460
Publikováno v:
Phys. Rev. Research 1, 033035 (2019)
We demonstrate a trap that confines polarizable particles around the antinode of a standing-wave microwave field. The trap relies only on the polarizability of the particles far from any resonances, so can trap a wide variety of atoms and molecules i
Externí odkaz:
http://arxiv.org/abs/1906.05380
Publikováno v:
Phys. Rev. Lett. 120, 083201 (2018)
We present the properties and advantages of a new magneto-optical trap (MOT) where blue-detuned light drives `type-II' transitions that have dark ground states. Using $^{87}$Rb, we reach a radiation-pressure-limited density exceeding $10^{11}$cm$^{-3
Externí odkaz:
http://arxiv.org/abs/1712.05002
Autor:
Truppe, S., Williams, H. J., Fitch, N. J., Hambach, M., Wall, T. E., Hinds, E. A., Sauer, B. E., Tarbutt, M. R.
Using frequency-chirped radiation pressure slowing, we precisely control the velocity of a pulsed CaF molecular beam down to a few m/s, compressing its velocity spread by a factor of 10 while retaining high intensity: at a velocity of 15~m/s the flux
Externí odkaz:
http://arxiv.org/abs/1605.06055
Publikováno v:
Phys. Rev. A 90, 053430 (2014)
Rydberg states of atomic helium with principal quantum numbers ranging from n=20 to n=100 have been prepared by non-resonance-enhanced single-color two-photon excitation from the metastable 2 {^3}S{_1} state. Photoexcitation was carried out using lin
Externí odkaz:
http://arxiv.org/abs/1412.3043
Autor:
Zhelyazkova, V., Cournol, A., Wall, T. E., Matsushima, A., Hudson, J. J., Hinds, E. A., Tarbutt, M. R., Sauer, B. E.
We demonstrate slowing and longitudinal cooling of a supersonic beam of CaF molecules using counter-propagating laser light resonant with a closed rotational and almost closed vibrational transition. A group of molecules are decelerated by about 20 m
Externí odkaz:
http://arxiv.org/abs/1308.0421
Autor:
Wall, T. E., Kanem, J. F., Dyne, J. M., Hudson, J. J., Sauer, B. E., Hinds, E. A., Tarbutt, M. R.
Publikováno v:
Phys. Chem. Chem. Phys. 13, 18991 (2011)
We report the Stark deceleration of CaF molecules in the strong-field seeking ground state and in a weak-field seeking component of a rotationally-excited state. We use two types of decelerator, a conventional Stark decelerator for the weak-field see
Externí odkaz:
http://arxiv.org/abs/1104.3976
Publikováno v:
Phys. Rev. A 81, 033414 (2010)
In a Stark decelerator, polar molecules are slowed down and focussed by an inhomogeneous electric field which switches between two configurations. For the decelerator to work, it is essential that the molecules follow the changing electric field adia
Externí odkaz:
http://arxiv.org/abs/1001.3222
Autor:
Wall, T. E., Armitage, S., Hudson, J. J., Sauer, B. E., Dyne, J. M., Hinds, E. A., Tarbutt, M. R.
Publikováno v:
Phys. Rev. A 80, 043407 (2009)
An alternating gradient electric guide provides a way to transport a wide variety of polar molecules, including those in high-field seeking states. We investigate the motion of polar molecules in such a guide by measuring the transmission of CaF mole
Externí odkaz:
http://arxiv.org/abs/0905.2082
Autor:
Wall, T. E., Kanem, J. F., Hudson, J. J., Sauer, B. E., Cho, D., Boshier, M. G., Hinds, E. A., Tarbutt, M. R.
Publikováno v:
Phys. Rev. A 78, 062509 (2008)
We describe a method for determining the radiative decay properties of a molecule by studying the saturation of laser-induced fluorescence and the associated power broadening of spectral lines. The fluorescence saturates because the molecules decay t
Externí odkaz:
http://arxiv.org/abs/0809.1150