Real-time tracking of single shockwaves via amplified time-stretch imaging

Hanzard, Pierre-Henry; Godin, Thomas; Idlahcen, Saïd; Rozé, C; Hideur, Ammar

doi:10.1063/1.5028349

Cited by 18 publications

(9 citation statements)

References 34 publications

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“…For example, laser diode illumination in conjunction with a high-speed camera was used to demonstrate a sequence of shock wave propagation and their interplay with cavitation structures in transparent media (Agrež et al, 2020). In another study, time-stretch imaging was used to record the time lapse of shock wave propagation during a single-shot LPP, enabling its full dynamics to be monitored (Hanzard et al, 2018). Multiple shadowgram/Schlieren images were captured by splitting the beams into four and probing the plasma at various delays by using a regular CMOS digital single-lens reflex (DSLR) camera as the detector (Collins IV et al, 2021).…”

Section: B Shadowgraphymentioning

confidence: 99%

Optical diagnostics of laser-produced plasmas

Harilal,

Phillips,

Froula

et al. 2022

Preprint

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Laser-produced plasmas (LPPs) engulf exotic and complex conditions ranging in temperature, density, pressure, magnetic and electric fields, charge states, charged particle kinetics, and gas-phase reactions, based on the irradiation conditions, target geometries, and the background cover gas. The application potential of the LPP is so diverse that it generates considerable interest for both basic and applied research areas. The fundamental research on LPPs can be traced back to the early 1960s, immediately after the invention of the laser. In the 1970s, the laser was identified as a tool to pursue inertial confinement fusion, and since then, several other technologies emerged out of LPPs. These applications prompted the development and adaptation of innovative diagnostic tools for understanding the fundamental nature and spatiotemporal properties of these complex systems. Although most of the traditional characterization techniques developed for other plasma sources can be used to characterize the LPPs, care must be taken to interpret the results because of their small size, transient nature, and inhomogeneities. The existence of the large spatiotemporal density and temperature gradients often necessitates non-uniform weighted averaging over distance and time. Among the various plasma characterization tools, optical-based diagnostic tools play a key role in the accurate measurements of LPP parameters. The optical toolbox contains optical probing methods (Thomson scattering, shadowgraphy, Schlieren, interferometry, velocimetry, and deflectometry), optical spectroscopy (emission, absorption, and fluorescence), and passive and active imaging. Each technique is useful for measuring a specific property, and its use is limited to a certain time span during the LPP evolution because of the sensitivity issues related to the selected measuring tool. Therefore, multiple diagnostic tools are essential for a comprehensive insight into the entire plasma behavior. In recent times, the improvements in performance in the lasers and detector systems expanded the capability of the aforementioned passive and active diagnostics tools. This review provides an overview of optical diagnostic tools frequently employed for the characterization of the LPPs and emphasizes techniques, associated assumptions, and challenges.

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Section: B Shadowgraphymentioning

confidence: 99%

Optical diagnostics of laser-produced plasmas

Harilal,

Phillips,

Froula

et al. 2022

Preprint

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“…7 for a review). These technologies have opened up new frontiers in measurement science: in nonlinear dynamics of optical rogue waves, 8 acoustic shock waves, 9 mode-locked lasers, [10][11][12][13][14][15][16][17] parametric oscillators, 18 relativistic electron bunching, 6,19 as well as in applications to cancer cell identification, 20,21 optical coherence tomography (OCT), 22,23 material pump-probe spectroscopy, 24 and LIDAR. 25 To satisfy the ever-increasing demands on high-performance detectors for future physics experiments, at Karlsruhe Institute of Technology (KIT) several new detector technologies and systems are continuously developed in close collaboration with beam physics scientists of Karlsruhe Research Accelerator (KARA), 26 DESY 27 and Lille University.…”

Section: Introductionmentioning

confidence: 99%

Advanced diagnostic detectors for rogue phenomena, single-shot applications

Caselle

Bielawski²,

Chilingaryan³

et al. 2023

Real-Time Measurements, Rogue Phenomena, and Single-Shot Applications VIII

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The detection of rapid dynamics in diverse physical systems is traditionally very difficult and strongly dominated by several noise contributions. Laser mode-locking, electron bunches in accelerators, and optical-triggered phases in materials are events that carry important information about the system from which they emerge. By detecting single-shot spectra with high repetition rates over long-time scales, new possibilities and applications to diagnose, control and tailor the spectral dynamics of lasers and electron beams in synchrotron and free-electron laser (FEL) accelerators open up. This contribution focuses on the latest developments of real-time, single-shot, highrepetition-rate detectors and data acquisition systems, with a special focus on emerging technologies and new possibilities in the diagnostics of rogue optical signals.

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“…Photonic time stretch is a real-time data acquisition technology [20,21] that has spawned a vast number of scientific and technological advancements [22,23]. This class of real-time measurement systems have been exceptionally successful in capturing single shot phenomena such as optical rogue waves [24], relativistic electron dynamics [25][26][27], chemical transients in combustion [28], shock waves [29], internal dynamics of soliton molecules [30], birth of laser mode-locking [31], and single-shot spectroscopy of chemical bonds [32,33]. They have also evolved into high throughput microscopy [34] of biological cells [35], label-free classification of cells [36][37][38], gyroscope [39], mid-infrared spectroscopy [40] and many other applications [41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Differential and phase-diverse electrooptic modulators

Ordouie

Jiang

Zhou

et al. 2023

Preprint

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Bandwidth and noise are fundamental considerations in all communication and signal processing systems. The group-velocity dispersion of optical fibers creates nulls in their frequency response, limiting the bandwidth and hence the temporal response of communication and signal processing systems. Intensity noise is often the dominant optical noise source for semiconductor lasers in data communication. In this paper, we propose and demonstrate a new class of electrooptic modulators that is capable of mitigating both of these problems. Fabricated in thin-film lithium niobate, the modulator simultaneously achieves phase diversity and differential operations. The former compensates for the dispersion penalty of the fiber, and the latter overcomes the intensity noise and other common mode fluctuations. Applications of the so-called four-phase electrooptic modulator in time-stretch data acquisition and in optical communication are demonstrated.

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Real-time tracking of single shockwaves via amplified time-stretch imaging

Cited by 18 publications

References 34 publications

Optical diagnostics of laser-produced plasmas

Optical diagnostics of laser-produced plasmas

Advanced diagnostic detectors for rogue phenomena, single-shot applications

Differential and phase-diverse electrooptic modulators

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