Enhanced four-wave mixing in mercury isotopes, prepared by stark-chirped rapid adiabatic passage

Oberst, Martin; Klein, Jens; Halfmann, Thomas

doi:10.1016/j.optcom.2005.12.084

Cited by 21 publications

(12 citation statements)

References 41 publications

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“…Now the emitter is driven to the state |+ by an adiabatic passage technique, slowly increasing Ω and possibly varying the Laser frequency so that finally a situation with Ω = 0 and ∆ = 0 is reached. Several methods for this procedure were demonstrated experimentally (see, e.g., [25]). After this initialisation procedure, the transistor is sensitive to the arrival of the gate photon as long as the driving field remains on.…”

Section: A Single Photon Transistormentioning

confidence: 99%

Photon scattering by a three-level emitter in a one-dimensional waveguide

2010

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We discuss the scattering of photons from a three-level emitter in a one-dimensional waveguide, where the transport is governed by the interference of spontaneously emitted and directly transmitted waves. The scattering problem is solved in closed form for different level structures. Several possible applications are discussed: The state of the emitter can be switched deterministically by Raman scattering, thus enabling applications in quantum computing such as a single photon transistor. An array of emitters gives rise to a photonic band gap structure, which can be tuned by a classical driving laser. A disordered array leads to Anderson localization of photons, where the localization length can again be controlled by an external driving.

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Section: A Single Photon Transistormentioning

confidence: 99%

Photon scattering by a three-level emitter in a one-dimensional waveguide

2010

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“…by varying the size of the UV and visible beams inside the plasma, tailoiring the shape of the plume, etc.) Additionally, the use of coherent preparation of states (such as SCRAP [20]) may be envisaged as a way to overcome saturation issues. At last, one can take advantage of the large broadening of the two-photon resonance discussed in this paper to release the constraint on the narrow linewidth of the tunable dye laser: the source could be made significantly more compact using an allsolid-state compact OPO (optical parametric oscillator).…”

Section: Resultsmentioning

confidence: 99%

“…The highest efficiency ever reported to date is 5% (1.1 mJ @130 nm), obtained by Muller et al [18] from three distinct laser systems, whose wavelengths were chosen to optimize phase matching, in a 1-m long Hg heat pipe. The most recent works on the development of Hg-based sources include the first CW Lymanalpha source [14,19] and the achievement of a one-order-of-magnitude enhancement of four-wave mixing using Stark Chirped Rapid Adiabatic Passage [20], with a setup similar to the one presented in this paper. However, all these experiments utilize hot (~200°C) mercury vapor, which restricts their practical use, since complex heat pipes have to be designed to prevent the vapor from coating the windows of the cell (see, e.g., ref [19]).…”

Section: Introductionmentioning

confidence: 99%

Enhanced generation of vacuum-ultraviolet radiation by four-wave mixing in mercury using pulsed laser vaporization

et al. 2007

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The efficiency of a coherent VUV source at 125 nm, based on 2-photon resonant four-wave mixing in mercury vapor, has been enhanced by up to 2 orders of magnitude. This enhancement was obtained by locally heating a liquid Hg surface with a pulsed excimer laser, resulting in a high density vapor plume in which the nonlinear interaction occurred. Energies up to 5 µJ (1 kW peak power) have been achieved while keeping the overall Hg cell at room temperature, avoiding the use of a complex heat pipe. We have observed a strong saturation of the VUV yield when peak power densities of the fundamental beams exceed the GW/cm 2 range, as well as a large intensity-dependant broadening (up to ~30 cm -1 ) of the two-photon resonance. The source has potential applications for high resolution interference lithography and photochemistry.

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“…However, the natural initial condition for this case is ρ 11 = ρ 22 = 0.5, and hence f 2 = 0 as we see from Eqs. (9) and (10). Namely,…”

Section: Subsystemmentioning

confidence: 99%

“…For instance, maximum coherence prepared between the two ground states in or double-systems results in high conversion efficiency of the FWM field within one coherence length, which means that the phase matching condition is not required for the efficient FWM processes [5][6][7]. Similarly, large coherence prepared between the ground and highly excited states can lead to the enhancement of FWM processes in the vacuum ultraviolet (VUV) or extreme ultraviolet (XUV) regions [8][9][10][11][12][13][14][15], which is known to be a very difficult task [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Detuning-induced stimulated Raman adiabatic passage in atoms with hyperfine structure

Deng

Nakajima

2014

Phys. Rev. A

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We theoretically study the generation of coherence in generalized two-level atoms with hyperfine structure by utilizing the detuning-induced stimulated Raman adiabatic passage (D-STIRAP). As expected, the degree of attainable coherence between the ground and excited states cannot be as large as that for the ideal two-level atoms without hyperfine structure. However, we find that the substantial degree of coherence can still be produced with small modulations, and the modulation period is essentially determined by the hyperfine splittings in the ground and excited states. The D-STIRAP scheme in generalized two-level atoms is sufficiently robust against the various parameters such as intensities of lasers, initial detuning, time delay between the laser pulses, and Doppler broadening. As a specific example, we show realistic results for the D 1 transition of Na.

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Enhanced four-wave mixing in mercury isotopes, prepared by stark-chirped rapid adiabatic passage

Cited by 21 publications

References 41 publications

Photon scattering by a three-level emitter in a one-dimensional waveguide

Photon scattering by a three-level emitter in a one-dimensional waveguide

Enhanced generation of vacuum-ultraviolet radiation by four-wave mixing in mercury using pulsed laser vaporization

Detuning-induced stimulated Raman adiabatic passage in atoms with hyperfine structure

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