Simultaneous laser cooling of multiple atomic species using an optical frequency comb

Aumiler, Damir; Ban, Ticijana

doi:10.1103/physreva.85.063412

Cited by 15 publications

(24 citation statements)

References 27 publications

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“…For these parameters, the probability of excited state decay between pulses (1 − e −Tr/τ ) is 78%, and each decay makes the ion insensitive to the optical phase of the next pulse, suggesting that the comb teeth will not be well resolved. Quantitatively, the quasi-steady-state scattering rate for an atom at rest illuminated by a resonant comb of uniformly intense teeth (τ pulse T r ) is given by [13][14][15]…”

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confidence: 99%

Phonon Lasing from Optical Frequency Comb Illumination of Trapped Ions

Ransford

Jayich

et al. 2018

Phys. Rev. Lett.

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We demonstrate the use of a frequency-doubled optical frequency comb to load, cool, and crystallize trapped atomic ions as an alternative to ultraviolet (UV) or even deep UV continuous-wave lasers. We find that the Doppler shift from the atom's oscillation in the trap, driven by the blue-detuned comb teeth, introduces additional cooling and amplification which gives rise to steady-state phonon lasing of the ion's harmonic motion in the trap. The phonon laser's gain saturation keeps the optical frequency comb from continually adding energy without bound. This protection allows us to demonstrate loading and crystallization of hot ions directly with the comb, eliminating the need for a continuous-wave cooling laser, a technique that is extendable to the deep UV.

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confidence: 99%

Phonon Lasing from Optical Frequency Comb Illumination of Trapped Ions

Ransford

Jayich

et al. 2018

Phys. Rev. Lett.

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“…Initially, continuous laser radiation was used for this purpose, but now pulsed laser applications for cooling [4][5][6][7][8][9][10][11] and trapping [12][13][14][15][16] of atoms and molecules are also discussed. In [4] the deceleration of a Na beam by a counterpropagating beam of a mode-locked laser and the appearance of negative velocity atoms were observed for the first time.…”

Section: Introductionmentioning

confidence: 99%

“…For a very narrow transition, when γ k 2 /m, the minimum of the kinetic energy falls behind its cw counterpart. Laser cooling of atoms by an optical frequency comb (FC) was discussed in [8][9][10][11]. In particular, laser cooling by the FC on two-photon transitions was proposed in [8].…”

Section: Introductionmentioning

confidence: 99%

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Cooling and trapping of atoms and molecules by counterpropagating pulse trains

et al. 2014

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We discuss a possible one-dimensional trapping and cooling of atoms and molecules due to their nonresonant interaction with counterpropagating light pulse trains. The counterpropagating pulses form a one-dimensional trap for atoms and molecules and a properly chosen carrier frequency detuning from the transition frequency of the atoms or molecules keeps the temperature of the atomic or molecular ensemble close to the Doppler cooling limit. The calculation by the Monte Carlo wave-function method is carried out for the two-level and three-level schemes of the atom's and the molecule's interaction with the field, respectively. The models discussed are applicable to atoms and molecules with almost diagonal Frank-Condon factor arrays. Illustrative calculations are carried out for ensemble-averaged characteristics for sodium atoms and SrF molecules in the trap. The potential for the nanoparticle light pulses's trap formed by counterpropagating light pulse trains is also discussed.

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“…In the limit of weak single-pulse excitation (Ω N T r ≪ π), the timeaveraged excitation rate for an atom moving with velocity v is given by (see Refs. [19,20,25])…”

Section: Theorymentioning

confidence: 99%

Cold Results from Fast Lasers

Barry

2016

Physics

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Ultracold atoms, produced by laser cooling and trapping, have led to recent advances in quantum information, quantum chemistry, and quantum sensors. A lack of ultraviolet narrow-band lasers precludes laser cooling of prevalent atoms such as hydrogen, carbon, oxygen, and nitrogen. Broadband pulsed lasers can produce high power in the ultraviolet, and we demonstrate that the entire spectrum of an optical frequency comb can cool atoms when used to drive a narrow two-photon transition. This multiphoton optical force is also used to make a magneto-optical trap. These techniques may provide a route to ultracold samples of nature's most abundant building blocks for studies of pure-state chemistry and precision measurement.

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Simultaneous laser cooling of multiple atomic species using an optical frequency comb

Cited by 15 publications

References 27 publications

Phonon Lasing from Optical Frequency Comb Illumination of Trapped Ions

Phonon Lasing from Optical Frequency Comb Illumination of Trapped Ions

Cooling and trapping of atoms and molecules by counterpropagating pulse trains

Cold Results from Fast Lasers

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