Optical forces on two-level atoms by subcycle pulsed focused vector fields

Cai, Xunming; Jian, Zheng; Lin, Qiang

doi:10.1103/physreva.87.043401

Cited by 13 publications

(4 citation statements)

References 26 publications

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“…When the pulse duration approaches the optical cycle, the direct current (DC) component in carrier-envelope (CE) model with an envelope multiplying with a carrier wave is found to cause nonphysical results [18]. Recently, the analytical expressions of single-cycle and sub-cycle pulses which are the exact solutions of Maxwell's equations have been found [19,20]. Some new properties of sub-cycle pulse including the intrinsic chirp and self-induced blueshift of the center frequency are discovered.…”

Section: Introductionmentioning

confidence: 99%

Propagation of intrinsic chirped sub-cycle and single-cycle pulses in a silica fiber

Cai

Zhao

Lin

et al. 2016

Optics Communications

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The propagation of Gaussian sub-cycle and single-cycle pulses in a nonlinear media is studied using the analytical expression of pulses. The analytical expression is a modified version of the vector potential definition model of sub-cycle pulse. The intrinsic characteristics of sub-cycle and single-cycle pulses, such as the intrinsic chirp and the self-induced blue-shift of the central frequency of spectrum are found to have an important effect on the propagation of pulses in the nonlinear media. The initial 0.28-cycle pulse evolves into a primary multi-cycle pulse and a single-cycle precursor pulse during the propagation. The single-cycle precursor pulse is formed by the carrier frequency modulation on the leading side of pulse. During the propagation of the sub-cycle pulse, the self-steepening effect and the amplitude of the precursor pulse are more significant due to the shorter pulse duration. The reason can be attributed to the intrinsic characteristics of sub-cycle pulse.

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Section: Introductionmentioning

confidence: 99%

Propagation of intrinsic chirped sub-cycle and single-cycle pulses in a silica fiber

Cai

Zhao

Lin

et al. 2016

Optics Communications

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“…In this context several studies have been reported. For example, optical force on two-level atoms by subcycle pulsed focused vector fields [13], light force on a beam of neutral two-level atoms superimposed upon a few-cycle pulsed Gaussian laser field under both resonant and off-resonant condition [14], optical dipole force on ladder-like three-level atomic systems induced by few-cycle-pulse laser fields [15], near resonant optical force [16] and trapping of nanoparticles with femtosecond pulses [3].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, owing to the recent progress in the generation of femtosecond and attosecond laser pulses, study of the mechanical effect of light on atoms and molecules is getting a tremendous boost [13][14][15][16][17]. In this context several studies have been reported.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous control of optical dipole force and coherence creation by super-Gaussian femtosecond pulses inΛ-like atomic systems

Kumar

Sarma

2014

Phys. Rev. A

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We report a study on the optical dipole force on a beam of neutral three-level like atomic system induced by a femtosecond super-Gaussian pulse. We show that maximum coherence between the ground state |1> and the excited state |2> could be achieved using a train of femtosecond pulses. In addition, it is possible to control the trajectory of the atoms in an atomic beam by using the same scheme. The robustness of the scheme against the variation of the pulse parameters is also investigated.

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“…Manipulation and trapping of neutral atoms using laser pulses is continued to be a topic of considerable interest in atomic and optical physics [1]. In recent years, owing to the tremendous technological progress in the generation of femtosecond and attosecond laser pulses study of optical force on atoms and molecules is getting a tremendous boost [2][3][4][5][6][7]. Optical force is now exploited in as diverse areas as atom optics [8], Bose-Einstein condensation (BEC) [9,10] and quantum information [11].…”

mentioning

confidence: 99%

Optical trap potential control in N-type four-level atoms by femtosecond Gaussian pulses

Chakraborty

Sarma

2015

J. Opt. Soc. Am. B

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In this work we present a scheme to control the optical dipole trap potential in an N-type four-level atomic system by using chirped femtosecond Gaussian pulses. The spatial size of the trap can be well controlled by tuning the beam waist of the Gaussian pulse and the detuning frequency. The trapping potential splits with increasing Rabi frequency about the center of the trap, a behavior analogous to the one observed experimentally in the context of trapping of nanoparticles with femtosecond pulses. An attempt is made to explain the physics behind this phenomenon by studying the spatial probability distribution of the atomic populations.

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Optical forces on two-level atoms by subcycle pulsed focused vector fields

Cited by 13 publications

References 26 publications

Propagation of intrinsic chirped sub-cycle and single-cycle pulses in a silica fiber

Propagation of intrinsic chirped sub-cycle and single-cycle pulses in a silica fiber

Simultaneous control of optical dipole force and coherence creation by super-Gaussian femtosecond pulses inΛ-like atomic systems

Optical trap potential control in N-type four-level atoms by femtosecond Gaussian pulses

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