Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Aakash Ravi"'
Autor:
Eunmi Chae, Loic Anderegg, Benjamin L Augenbraun, Aakash Ravi, Boerge Hemmerling, Nicholas R Hutzler, Alejandra L Collopy, Jun Ye, Wolfgang Ketterle, John M Doyle
Publikováno v:
New Journal of Physics, Vol 19, Iss 3, p 033035 (2017)
We demonstrate the one-dimensional, transverse magneto-optical compression of a cold beam of calcium monofluoride (CaF). By continually alternating the magnetic field direction and laser polarizations of the magneto-optical trap (RF MOT), a photon sc
Externí odkaz:
https://doaj.org/article/7056b36583c3472c8a1a714870c11e24
Publikováno v:
New Journal of Physics, Vol 16, Iss 6, p 063070 (2014)
Direct loading of lanthanide atoms into magneto-optical traps (MOTs) from a very slow cryogenic buffer gas beam source is achieved, without the need for laser slowing. The beam source has an average forward velocity of 60– $70\;{\rm m}\;{{{\rm s}}^
Externí odkaz:
https://doaj.org/article/8e2e8cca9ae14cfe9c2732c77a358e43
Autor:
Reza Ebadi, David F. Phillips, Anubhav Mathur, Nicholas D. Tailby, Roger R. Fu, Surjeet Rajendran, Mason C. Marshall, Aakash Ravi, Raisa Trubko, Erwin H. Tanin, Ronald L. Walsworth
Publikováno v:
Physical Review
Self-interactions within the dark sector could clump dark matter into heavy composite states with low number density, leading to a highly suppressed event rate in existing direct detection experiments. However, the large interaction cross section bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27787fe545df9808675aeba02028a68c
http://arxiv.org/abs/2105.03998
http://arxiv.org/abs/2105.03998
Autor:
Dimitar Sasselov, Ronald L. Walsworth, Matthias Beck, Aakash Ravi, David F. Phillips, Albrecht Bartels, Andrew Szentgyorgyi
Publikováno v:
Journal of Lightwave Technology. 36:5309-5315
We demonstrate a broad, flat, visible supercontinuum spectrum that is generated by a dispersion-engineered tapered photonic crystal fiber pumped by a 1 GHz repetition rate turn-key Ti:sapphire laser outputting $\sim$ 30 fs pulses at 800 nm. At a puls
The temporal stability of millisecond pulsars is remarkable, rivaling even some terrestrial atomic clocks at long timescales. Using this property, we show that millisecond pulsars distributed in the galactic neighborhood form an ensemble of accelerom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5f675383ad573b22d1ea6f4eb9a138d
http://arxiv.org/abs/2008.13052
http://arxiv.org/abs/2008.13052
Autor:
David F. Phillips, Aakash Ravi, Nicholas Langellier, Malte Buschmann, Ronald L. Walsworth, Benjamin R. Safdi
Publikováno v:
Physical review letters. 123(9)
Dark matter comprises the bulk of the matter in the universe but its particle nature and cosmological origin remain mysterious. Knowledge of the dark matter density distribution in the Milky Way Galaxy is crucial to both our understanding of the stan
Autor:
Susumu Kuma, Hiromichi Hoshina, Takamasa Momose, Andrey F. Vilesov, Russell Sliter, Aakash Ravi
Publikováno v:
ChemPhysChem. 17:3818-3825
In this work, we report on the infrared spectroscopic study of clusters of CH4 molecules with up to N=80 para-hydrogen molecules assembled inside He droplets. Upon increase of the number of the added para-hydrogen molecules up to about N=12, both the
Autor:
Loic Anderegg, Wolfgang Ketterle, Benjamin Augenbraun, John M. Doyle, Nicholas R. Hutzler, Boerge Hemmerling, Alejandra Collopy, Jun Ye, Aakash Ravi, Eunmi Chae
Publikováno v:
Physical review letters. 119(10)
We demonstrate significantly improved magneto-optical trapping of molecules using a very slow cryogenic beam source and RF modulated and DC magnetic fields. The RF MOT confines $1.1(3) \times 10^5$ CaF molecules at a density of $4(1) \times 10^6$ cm$
Autor:
Leopoldo L. Martin, David F. Phillips, Massimo Cecconi, Emilio Molinari, Adriano Ghedina, Andrew Szentgyorgyi, Ronald L. Walsworth, Matthias Beck, Aakash Ravi, Dimitar Sasselov, Albrecht Bartels
Using a turn-key Ti:sapphire femtosecond laser frequency comb, an off-the-shelf supercontinuum device, and Fabry-Perot mode filters, we report the generation of a 16 GHz frequency comb spanning a 90 nm band about a center wavelength of 566 nm. The li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2f10c9220ba7814fdd4d317d8d24953
http://arxiv.org/abs/1705.07192
http://arxiv.org/abs/1705.07192
Autor:
Alejandra Collopy, Benjamin Augenbraun, Eunmi Chae, Jun Ye, Wolfgang Ketterle, John M. Doyle, Boerge Hemmerling, Aakash Ravi, Nicholas R. Hutzler, Loic Anderegg
Publikováno v:
IOP Publishing
We demonstrate with a RF-MOT the one dimensional, transverse magneto-optical compression of a cold beam of calcium monofluoride (CaF). By continually alternating the magnetic field direction and laser polarizations of the magneto-optical trap, a phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c5f1b513d87fe88999c200af50ce4e2
http://arxiv.org/abs/1701.03254
http://arxiv.org/abs/1701.03254