Ultrahigh-Repetition-Rate Pulse Train With Absolute-Phase Control Produced by an Adiabatic Raman Process

Katsuragawa, M.; Suzuki, Takakazu; Shiraga, K.; Arakawa, Masaki; Onose, Takashi; Yokoyama, K.; Hong, Feng−Lei; Misawa, Kazuhiko

doi:10.1142/9789814282345_0017

Cited by 2 publications

(3 citation statements)

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“…When we examine a discrete spectrum of which the carrierenvelope offset frequency is controlled, [34][35][36][37][38] we can simultaneously manipulate the carrier-envelope phase in addition to the intensity waveform. 37,38 Figure 3d demonstrates that the electric field is manipulated to sine-like (21.0 mm) or cosine-like (11.6 mm) monocycle waveforms by slightly shifting the thickness of the silica glass employed in the NEC method from condition III.…”

Section: Numerical Exploration Methodsmentioning

confidence: 99%

“…22,23 These studies have mainly been executed in the extreme ultraviolet regime. On the other hand, in closely related studies in the near-infrared-visible-ultraviolet range, curious new approaches based on four-wave mixing in whispering-gallery-mode microresonators 24,25 or the adiabatic excitation of Raman transitions [26][27][28][29][30][31][32][33][34][35][36][37][38][39] are being extensively examined to generate broad, discrete, coherent spectra spanning over an octave and then manipulate them. Here, we discuss novel methods of generating a train of attosecond pulses by controlling such highly discrete coherent spectra.…”

Section: Introductionmentioning

confidence: 99%

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The simplest route to generating a train of attosecond pulses

2013

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We report on two novel routes to generating a train of attosecond pulses from a broad discrete spectrum in the near-infrared-visibleultraviolet range. One extends an integer-temporal-Talbot (ITT) concept to include high-order spectral dispersions and generates a pulse train that completely satisfies the transform-limited condition. The other numerically explores the optimum conditions under which we can obtain an attosecond pulse train that approximately satisfies the transform-limited condition. The second method is more practical than the first. Either of these methods is extremely simple and robust; we need only to place a few thin dispersive materials in the optical path and to adjust their thicknesses without spatially dispersing the frequency components. We numerically demonstrate the generation of a train of attosecond pulses with a transform-limited pulse duration of 728 as and a repetition period of 8.03 fs in gaseous parahydrogen.

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Section: Numerical Exploration Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The simplest route to generating a train of attosecond pulses

2013

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“…4 which shows quantum efficiencies of the high-order Raman generations where the plate thicknesses were fixed). We also note that, besides this arbitrary wavelength selectivity, this laser technology has other attractive abilities, such as high spectral intensity enabling nonlinear spectroscopy, high frequency precision derived from an optical-frequency-standard precision 31 32 , and scalability to ultrahigh energy (e.g. >1 Joule per pulse).…”

Section: Resultsmentioning

confidence: 99%

Freely designable optical frequency conversion in Raman-resonant four-wave-mixing process

Jian

Katsuragawa

2015

Sci Rep

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Nonlinear optical processes are governed by the relative-phase relationships among the relevant electromagnetic fields in these processes. In this Report, we describe the physics of arbitrary manipulation of Raman-resonant four-wave-mixing process by artificial control of relative phases. As a typical example, we show freely designable optical-frequency conversions to extreme spectral regions, mid-infrared and vacuum-ultraviolet, with near-unity quantum efficiencies. Furthermore, we show that such optical-frequency conversions can be realized by using a surprisingly simple technology where transparent plates are placed in a nonlinear optical medium and their positions and thicknesses are adjusted precisely. In a numerical simulation assuming practically applicable parameters in detail, we demonstrate a single-frequency tunable laser that covers the whole vacuum-ultraviolet spectral range of 120 to 200 nm.

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Ultrahigh-Repetition-Rate Pulse Train With Absolute-Phase Control Produced by an Adiabatic Raman Process

Cited by 2 publications

References 1 publication

The simplest route to generating a train of attosecond pulses

The simplest route to generating a train of attosecond pulses

Freely designable optical frequency conversion in Raman-resonant four-wave-mixing process

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