Signatures of carrier-wave Rabi flopping in GaAs

Mücke, Oliver D.; Tritschler, T.; Wegener, Martin; Morgner, Uwe; Kärtner, Franz X.

doi:10.1109/qels.2001.962056

Cited by 13 publications

(13 citation statements)

References 15 publications

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“…Ziolkowski et al found that the time-derivative behavior of the carry-wave field has a significant impact on the time evolution of a two-level atom system [11]. Moreover, for large pulse areas (>10π), the phenomenon of the carrier-wave Rabi flopping (CWRF) can lead to carrier-wave reshaping and significantly higher spectral components and even soft x-ray generation was proposed by Hughes [12], and it then was proved in experiment [13]. Furthermore, Xiao et al reported that, contrary to the long-pulse, the variation of the fewcycle pulse area is caused by the pulse splitting and not by pulse broadening or compression [17].…”

Section: Introductionmentioning

confidence: 99%

“…For long pulse, we can use the Maxwell-Bloch (M-B) equations with the slowly varying envelop approximation (SVEA) and the rotating-wave approximation (RWA) to obtain some important results, for example, the area theorem [9,10], which can predict and explain many interesting phenomena such as self-induced transparency (SIT) and pulse compression. However, for few-cycle laser pulse, these approaches fail clearly [11][12][13][14]. Using the full M-B equations without SVEA and RWA, the propagating behaviors of few-cycle laser pulse in two-level atomic or molecular mediums have been investigated in many literatures [1][2][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…However, for few-cycle laser pulse, these approaches fail clearly [11][12][13][14]. Using the full M-B equations without SVEA and RWA, the propagating behaviors of few-cycle laser pulse in two-level atomic or molecular mediums have been investigated in many literatures [1][2][11][12][13][14][15][16][17]. Ziolkowski et al found that the time-derivative behavior of the carry-wave field has a significant impact on the time evolution of a two-level atom system [11].…”

Section: Introductionmentioning

confidence: 99%

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Spectral properties of femtosecond chirped Gaussian pulse propagating in a dense three-level Λ-type atomic medium

et al. 2010

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It is shown that, variation of the sign and size of the chirp coefficient (C) of the pulse has considerable effect on spectral properties of the pulse and the effect is closely relative to size of the pulse area. When the pulse with smaller area, 2π pulse, propagates in the medium, pulse splitting doesn't occur and the pulse evolves gradually to an approximate normal Gaussian pulse (C=0)；new high frequency component doesn't basically appear; with increasing value of C, oscillation amplitude of blue shift and red shift components increases and blue shift component oscillates more severely; moreover, the strength of the spectral component near the central frequency decreases considerably but the strength of blue shift component increases obviously. When the 4π pulse propagates in the medium, the pulse will split into sub-pulses with different numbers and shapes, new high frequency component can be produced, but the strength of the high frequency component is smaller; similar to the case of 2π pulse, blue shift component oscillates more severely; in addition, the strength of the spectral component with higher frequency decreases evidently with increasing value of C. When the pulse with larger area, 8π pulse, propagates in the medium, the pulse splitting is similar to that in the 4π pulse case, but supercontinuum spectrum with larger strength, higher frequency and wider frequency range than that in the 4π pulse case can be obtained; varying the sign and size of C can not produce new high frequency component, but can change strength of different frequency components in the spectrum, thus can get high frequency components with higher strength.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spectral properties of femtosecond chirped Gaussian pulse propagating in a dense three-level Λ-type atomic medium

et al. 2010

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“…were first experimentally observed by Mücke et al [187] on the interband transition of GaAs. The authors identify the CW regime by the appearance of higher harmonics in the spectrum of the emitted signal.…”

Section: Rabi Oscillations In the Carrier Wave Regimementioning

confidence: 89%

Nonlinear THz Spectroscopy of n-Type GaAs

Gaal

Reimann

Woerner

et al. 2007

Ultrafast Phenomena XV

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In this thesis, the ultrafast dynamics of conduction band electrons in semiconductors are investigated by nonlinear terahertz (THz) spectroscopy. In particular, n-doped gallium arsenide samples with doping concentrations in the range of 10 16 cm −3 to 10 17 cm −3 are studied. A novel source for the generation of intense THz radiation is developed which yields single-cycle THz transients with field amplitudes of more then 400 kV/cm. The THz source uses ultrashort optical laser pulses provided by a Ti:sapphire oscillator. In addition, a two-color THz-pump mid-infrared-probe setup is implemented, which allows for two-dimensional time-resolved experiments in the far-infrared wavelength range. Field ionization of neutral shallow donors in gallium arsenide with intense, ultrashort THz pulses and subsequent coherent radiative recombination of electrons to impurity ground states is observed at room temperature. The superradiant decay of the nonlinear polarization results in the emission of a coherent signal with picosecond lifetimes. Such nonlinear signals, which exhibit a lifetime ten times longer than in the linear regime are observed for the first time. At low temperatures and THz field strengths below 5 kV/cm, Rabi flopping on shallow donor transitions is demonstrated. For the first time, the polar electron-LO phonon interaction is directly measured in the quantum kinetic transport regime. Quasi-instantaneous acceleration of conduction band electrons in the polar gallium arsenide lattice by the electric field of intense THz pulses and subsequent probing of the mid-infrared transmission reveals a modulation of the transmission along the THz-mid-infrared delay coordinate with the frequency of the LO phonon. These modulations directly display the relative phase between the electron motion and its surrounding virtual phonon cloud. Quantum kinetic model calculations fully account for the observed phenomena.

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“…Sub-cycle optical waveforms would allow to steer, switch and control such wave packets, enabling radically new implementations of electron diffraction and electron microscopy [27] with unprecedented combination of spatial and temporal resolution. Sub-cycle optical waveforms also find applications in the study of strong-field light-matter interactions in solids [28]- [37] and for the control of electric currents in (and thereby emitted HHG from) semiconductors [38], [39] and insulators on the sub-cycle timescale. Such extreme interactions of short optical waveforms with solids are expected to enable the field of lightwave nanoelectronics, which is based on nanocircuits, which accept data as light in the form of plasmons.…”

Section: Introductionmentioning

confidence: 99%

Toward Waveform Nonlinear Optics Using Multimillijoule Sub-Cycle Waveform Synthesizers

Mücke

Fang

Cirmi

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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Abstract-Waveform nonlinear optics aims to study and control the nonlinear interactions of matter with extremely short optical waveforms custom-tailored within a single cycle of light. Different technological routes to generate such multimillijoule sub-opticalcycle waveforms are currently pursued, opening up unprecedented opportunities in attoscience and strong-field physics. Here, we discuss the experimental schemes, introduce the technological challenges, and present our experimental results on high-energy sub-cycle optical waveform synthesis based on (1) parametric amplification and (2) induced-phase modulation in a two-color-driven gas-filled hollow-core fiber compressor. More specifically, for (1), we demonstrate a carrier-envelope-phase (CEP)-stable, multimillijoule three-channel parametric waveform synthesizer generating a >2-octave-wide spectrum (0.52-2.4 μm). After two amplification stages, the combined 125-μJ output supports 1.9-fs FWHM waveforms; energy scaling to >2 mJ is achieved after three amplification stages. FROG pulse characterization of all three second-stage outputs demonstrates the feasibility to recompress all three channels simultaneously close to the Fourier limit and shows the flexibility of our intricate dispersion management scheme for different Manuscript received January 23, 2015; revised April 16, 2015; accepted April 21, 2015. This work was supported by the Center for Free-Electron Laser Science at DESY, the excellence cluster "The Hamburg Centre for Ultrafast Imaging-Structure, Dynamics and Control of Matter at the Atomic Scale" of the Deutsche Forschungsgemeinschaft, the ERC-Synergy grant AXSIS under Grant 609920, and by JRA-INREX from LASERLAB-EUROPE under Grant 284464, ECS Seventh Framework Programme. The work of C. Manzoni was supported by MIUR FIRB under Grant RBFR12SW0J. experimental situations. For (2), we generate CEP-stable 1.7-mJ waveforms covering 365-930 nm (measured at 1% of the peak intensity) obtained from induced-phase modulation in a two-colordriven gas-filled hollow-core fiber. Using custom-designed doublechirped mirrors and a UV spatial light modulator will permit compression close to the 0.9-fs FWHM transform limit. These novel sources will become versatile tools for controlling strong-field interactions in matter and for attosecond pump-probe spectroscopy using VIS/IR and XUV/soft-X-ray pulses.Index Terms-Ultrabroadband sources, parametric oscillators and amplifiers, gas-filled hollow-core fiber pulse compression, pulse synthesis, waveform nonlinear optics.

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Signatures of carrier-wave Rabi flopping in GaAs

Cited by 13 publications

References 15 publications

Spectral properties of femtosecond chirped Gaussian pulse propagating in a dense three-level Λ-type atomic medium

Spectral properties of femtosecond chirped Gaussian pulse propagating in a dense three-level Λ-type atomic medium

Nonlinear THz Spectroscopy of n-Type GaAs

Toward Waveform Nonlinear Optics Using Multimillijoule Sub-Cycle Waveform Synthesizers

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