Measurement of non-compensated angular dispersion and the subsequent temporal lengthening of femtosecond pulses in a CPA laser

Osvay, K.; Kovács, A. P.; Kurdi, G.; Heiner, Zsuzsanna; Divall, M.; Klebniczki, J.; Ferincz, István

doi:10.1016/j.optcom.2004.11.099

Cited by 25 publications

(6 citation statements)

References 30 publications

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“…A similar but maybe less obvious effect is caused by non-compensated angular dispersion, which makes the pulse temporally chirped and its pulse front tilted (Diels & Rudolph, 1996). It happens typically ifthe grating pairs in a stretcher or a compressor of a CPA laser are slightly misaligned or the pulse propagates through wedged optics ( Osvay & Ross, 1994;Osvay et al, 2005;Pretzler et al, 2000). This residual angular dispersion, defined by the angle between the spectral phase fronts, not only lengthens the pulse due to the introduced group-delay dispersion (GDD) but also introduces uncompensated third-order dispersion (TOD) in the system (Osvay et al, 2004).…”

Section: Dispersion and Temporal Contrastmentioning

confidence: 99%

On the temporal contrast of high intensity femtosecond laser pulses

et al. 2005

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On the temporal contrast of high intensity femtosecond laser pulsesOsvay, Karoly; Csatari, M; Ross, IN; Persson, Anders; Wahlström, Claes-Göran General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. AbstractThe temporal contrast is classified into two main regimes, the nanosecond-scale and the picosecond-scale contrast prior to the main pulse. The Lund terawatt laser system is shown to be improved on the nano-and picosecond-scale by a factor of 10 and 50, respectively, when it was optimized for contrast but not for energy. Calculations are also presented to emphasize the role of angular dispersion on the picosecond contrast. Finally we show a compromise between the duration and contrast of femtosecond laser pulses amplified in an optical parametric (chirped pulse) amplifier.

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Section: Dispersion and Temporal Contrastmentioning

confidence: 99%

On the temporal contrast of high intensity femtosecond laser pulses

et al. 2005

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“…By inspection, as stated by Duarte (2009), it can be seen that from the second term on the numerical factors can be predetermined from Pascal's triangle relative to N where (N + 1) is the order of the derivative. Osvay et al (2004Osvay et al ( , 2005 have used the lower-order derivatives, given here, in practical femtosecond lasers to determine dispersions and laser pulse durations, for double-prism compressors, with excellent agreement between theory and experiments. Osvay et al (2004Osvay et al ( , 2005 have used the lower-order derivatives, given here, in practical femtosecond lasers to determine dispersions and laser pulse durations, for double-prism compressors, with excellent agreement between theory and experiments.…”

Section: Multiple-prism Dispersion and Laser Pulse Compressionmentioning

confidence: 83%

Dirac Notation Identities

Duarte¹

2017

Quantum Optics for Engineers

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“…There are many other examples of such 'incomplete' measurements, of varying complexity, which produce results that are not complete representations of the pulse electric field. These include interferometric measurement of radial groupdelay [79,80], extensions of single-shot autocorrelation to measure pulse-front tilt [81][82][83][84] or pulse-front curvature [85], multiple-slit spatio-temporal interferometry [86,87], There are more advanced diffractive methods that can do similar analysis, using a structured diffraction grating, referred to as 'chromatic diversity' [88], or a measurement of angular chirp simultaneously in both spatial dimensions [89,90]. There are also methods that are interested in only the temporal intensity profile (including the absolute intensity magnitude), for example the temporally-resolved intensity contouring (TRIC) technique [91].…”

Section: Simple or Incomplete Measurement Techniquesmentioning

confidence: 99%

Spatio-temporal characterization of ultrashort laser beams: a tutorial

Jolly

Gobert

Quéré

2020

J. Opt.

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The temporal characterization of ultrafast laser pulses has become a cornerstone capability of ultrafast optics laboratories and is routine both for optimizing laser pulse duration and designing custom fields. Beyond pure temporal characterization, spatio-temporal characterization provides a more complete measurement of the spatially-varying temporal properties of a laser pulse. These so-called spatio-temporal couplings (STCs) are generally nonseparable chromatic aberrations that can be induced by very common optical elements—for example, diffraction gratings and thick lenses or prisms made from dispersive material. In this tutorial we introduce STCs and a detailed understanding of their behavior in order to have a background knowledge, but also to inform the design of characterization devices. We then overview a broad range of spatio-temporal characterization techniques with a view to mention most techniques, but also to provide greater details on a few chosen methods. The goal is to provide a reference and a comparison of various techniques for newcomers to the field. Lastly, we discuss nuances of analysis and visualization of spatio-temporal data, which is an often underappreciated and non-trivial part of ultrafast pulse characterization.

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Measurement of non-compensated angular dispersion and the subsequent temporal lengthening of femtosecond pulses in a CPA laser

Cited by 25 publications

References 30 publications

On the temporal contrast of high intensity femtosecond laser pulses

On the temporal contrast of high intensity femtosecond laser pulses

Dirac Notation Identities

Spatio-temporal characterization of ultrashort laser beams: a tutorial

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