Wavefront analysis of a white-light supercontinuum

Kueny, Emma; Meier, Joachim; Lévecq, Xavier; Varkentina, Nadezda; Kärtner, Franz X.; Calendron, Anne-Laure

doi:10.1364/oe.26.031299

Cited by 4 publications

(4 citation statements)

References 19 publications

(5 reference statements)

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“…Taking a more direct approach, a Shack-Hartmann device has been used in combination with various band-pass and longpass filters (shown in figure 13(a)) to assess the wavefront of broadband laser sources, such as a white-light continuum [132,135] . This method is conceptually similar to the HAM-STER technique, but potentially cheaper to implement and is only limited spatially by the aperture of the sensor and the filters.…”

Section: Extensions Of Established Wavefront Sensing Techniquesmentioning

confidence: 99%

“…This method is conceptually similar to the HAM-STER technique, but potentially cheaper to implement and is only limited spatially by the aperture of the sensor and the filters. However, it is difficult to design filters that have a narrow transmission bandwidth, so the wavefront must be constructed via a very small number of frequencies as in [132] or a set of measurements that had overlapping spectra as in [135]. This could lead to errors if the transmission of the filters is not well-known or the spectrum is highly modulated, and will regardless lead to a relatively low spectral resolution.…”

Section: Extensions Of Established Wavefront Sensing Techniquesmentioning

confidence: 99%

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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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Section: Extensions Of Established Wavefront Sensing Techniquesmentioning

confidence: 99%

Section: Extensions Of Established Wavefront Sensing Techniquesmentioning

confidence: 99%

Spatio-temporal characterization of ultrashort laser beams: a tutorial

Jolly

Gobert

Quéré

2020

J. Opt.

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“…Almost all of the existing WFS can work only with monochromatic radiation. The methods and approaches used when working with polychromatic radiation impose certain restrictions [ 22 ]. Recently however, a fundamental demonstration of a holographic WFS was carried out that could work with polychromatic radiation due to the achromatic properties of the Fourier CGHs [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Breaking of Wavelength-Dependence in Holographic Wavefront Sensors Using Spatial-Spectral Filtering

Stsepuro

Kovalev

Zlokazov

et al. 2023

Sensors

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Nowadays, wavefront sensors are widely used to control the shape of the wavefront and detect aberrations of the complex field amplitude in various fields of physics. However, almost all of the existing wavefront sensors work only with quasi-monochromatic radiation. Some of the methods and approaches applied to work with polychromatic radiation impose certain restrictions. However, the contemporary methods of computer and digital holography allow implementing a holographic wavefront sensor that operates with polychromatic radiation. This paper presents a study related to the analysis and evaluation of the error in the operation of holographic wavefront sensors with such radiation.

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“…Generally, the laser peak intensity can be maximized by using a deformable mirror to minimize wavefront aberrations. Even though the wavefront is optimized before focusing, the real peak intensity at the focus may be lower than the expected peak intensity due to the spatiotemporal coupling effect, known as the combination of spatial and temporal effects [17][18][19][20][21]. Namely, the spatial variation of the temporal property of the laser pulse due to spatiotemporal couplings should be considered for the maximum peak intensity because only the spatial property of the laser pulse can be optimized through a wavefront correction.…”

Section: Introductionmentioning

confidence: 99%

5-Hz, 150-TW Ti:sapphire Laser with High Spatiotemporal Quality

Sung

Yoon

Choi

et al. 2020

J. Korean Phys. Soc.

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150-TW, 23-fs laser pulses with high spatial and temporal qualities have been generated at 5 Hz from a chirped-pulse amplification Ti:sapphire laser. The temporal and the spatial qualities of the laser pulse were optimized and characterized for high availability in the fields of high-field science and relativistic laser-matter interactions. The pulse duration was optimized by maximizing the spectral bandwidth and by minimizing the spectral phase error. A temporal contrast was enhanced using an ultrafast Pockels cell and a double plasma mirror, and wavefront aberrations were corrected using an adaptive optics system. Spatiotemporal couplings were characterized by measuring a frequency-resolved wavefront to estimate their effect on the peak intensity at the focus. Due to the high spatiotemporal quality resulting from this optimization and characterization of the laser beam, the 5-Hz 150-TW Ti:sapphire laser will be the workhorse for a variety of research on relativistic laser-matter interactions.

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Wavefront analysis of a white-light supercontinuum

Abstract: The characterization of the wavefront of a white-light supercontinuum generated by sub-picosecond pulses in YAG at 1030 nm shows a good quality and little dependence on the wavelength.

Cited by 4 publications

References 19 publications

Spatio-temporal characterization of ultrashort laser beams: a tutorial

Spatio-temporal characterization of ultrashort laser beams: a tutorial

Breaking of Wavelength-Dependence in Holographic Wavefront Sensors Using Spatial-Spectral Filtering

5-Hz, 150-TW Ti:sapphire Laser with High Spatiotemporal Quality

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