Highly simplified device for ultrashort-pulse measurement

O’Shea, Patrick; Kimmel, Mark W.; Gu, Xun; Trebino, Rick

doi:10.1364/ol.26.000932

Cited by 297 publications

(166 citation statements)

References 4 publications

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“…This extremely simple device is called GRENOUILLE [15]. It involves replacing the beam splitter, delay line, and beam combining optics with a simple element, a Fresnel biprism (a prism with an apex angle close to 180 • ).…”

Section: Ultrashort Optical Pulse-shape Measurements Using Frequency-mentioning

confidence: 99%

A simple method for the determination of the structure of ultrashort relativistic electron bunches

Saldin

Schneidmiller

Yurkov

2005

Nuclear Instruments and Methods in Physics Research Section A:

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In this paper we propose a new method for measurements of the longitudinal profile of 100 femtosecond electron bunches for X-ray Free Electron Lasers (XFELs). The method is simply the combination of two well-known techniques, which where not previously combined to our knowledge. We use seed 10-ps 1047 nm quantum laser to produce exact optical replica of ultrafast electron bunches. The replica is generated in apparatus which consists of an input undulator (energy modulator), and the short output undulator (radiator) separated by a dispersion section. The radiation in the output undulator is excited by the electron bunch modulated at the optical wavelength and rapidly reaches 100 MW-level peak power. We then use the now-standard method of ultrashort laser pulse-shape measurement, a tandem combination of autocorrelator and spectrum (FROG -frequency resolved optical gating). The FROG trace of the optical replica of electron bunch gives accurate and rapid electron bunch shape measurements in a way similar to a femtosecond oscilloscope. Real-time single-shot measurements of the electron bunch structure could provide significant information about physical mechanisms responsible for generation ultrashort electron bunches in bunch compressors. The big advantage of proposed technique is that it can be used to determine the slice energy spread and emittance in multishot measurements. It is possible to measure bunch structure completely, that is to measure peak current, energy spread and transverse emittance as a function of time. We illustrate with numerical examples the potential of the proposed method for electron beam diagnostics at the European X-ray FEL.

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Section: Ultrashort Optical Pulse-shape Measurements Using Frequency-mentioning

confidence: 99%

A simple method for the determination of the structure of ultrashort relativistic electron bunches

Saldin

Schneidmiller

Yurkov

2005

Nuclear Instruments and Methods in Physics Research Section A:

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“…3. Basically, we combined the single-shot FROG 1,24 and single-shot EOS [25][26][27] techniques. The main idea of the single-shot detection is mapping the delay between the test and reference pulses onto the transverse position on the plane where the nonlinear interaction occurs.…”

Section: Resultsmentioning

confidence: 99%

“…The basic idea to realize the single-shot detection is to map the delay between the test and reference pulses onto transverse position on the plane where the nonlinear mixing occurs by tilting the pulse front of the reference pulse. Such a technology is common for single-shot FROG 1,24 and single-shot EOS [25][26][27] .…”

Section: Methodsmentioning

confidence: 99%

Frequency-resolved optical gating capable of carrier-envelope phase determination

2013

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Recent progress of the coherent light synthesis technology has brought the generation of single-cycle pulses within our reach. To exploit the full potential of such a single-cycle pulse in any applications, it is highly important to obtain the full information of its electric field. Here we propose a novel pulse characterization scheme, which enables us to determine not only the intensity and phase profiles of ultrashort pulses but also their absolute carrier-envelope phase values. The method is based on a combination of frequency-resolved optical gating and electro-optic sampling, which can be extended to a self-referencing scheme to determine the electric field evolution of few-cycle ultrashort pulses. We have experimentally demonstrated the technique to characterize sub-single-cycle infrared pulses, and numerically studied the capability of the scheme to incorporate a self-referencing technique and to extend the wavelength range to visible region.

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“…Note that as in AJOLOTE and FROG the carrier phase and the linear phase are not retrieved [78]. The design of the AJOLOTE is a cross between a GRENOUILLE and an XFROG [79]; the gating pulse is an unshaped pulse from the laser source (reference pulse) and the time delay parameter is scanned in a multi-shot geometry. Therefore the traces have a linear dependence with the input intensity of the spectral phase shaped pulses instead of a quadratic dependence.…”

Section: Ajolotementioning

confidence: 99%

“…Therefore the traces have a linear dependence with the input intensity of the spectral phase shaped pulses instead of a quadratic dependence. Furthermore, the ambiguity in the time direction of the laser pulse is removed [79] and the delay range is not limited by the crossing angle or the spot sizes of the beams, thus a longer delay range appropriate for picoseconds-long spectral phase shaped pulses can be achieved.…”

Section: Ajolotementioning

confidence: 99%

Spectral phase shaping for non-linear spectroscopy and imaging

Postma

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Highly simplified device for ultrashort-pulse measurement

Cited by 297 publications

References 4 publications

A simple method for the determination of the structure of ultrashort relativistic electron bunches

A simple method for the determination of the structure of ultrashort relativistic electron bunches

Frequency-resolved optical gating capable of carrier-envelope phase determination

Spectral phase shaping for non-linear spectroscopy and imaging

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