1-J white-light continuum from 100-TW laser pulses

Petit, Yannick; Henin, Stefano; Nakaema, Walter M.; Béjot, Pierre; Jochmann, A.; Kraft, Stephan; Bock, Stefan; Schramm, U.; Stelmaszczyk, K.; Rohwetter, Philipp; Kasparian, Jérôme; Sauerbrey, R.; Wöste, L.; Wolf, Jean‐Pierre

doi:10.1103/physreva.83.013805

Cited by 19 publications

(15 citation statements)

References 27 publications

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“…Their transverse density is, however, limited to *10 cm -2 across the beam profile [23]. Consequently, most of the beam energy propagates in a ''photon bath'' surrounding the filaments, with intensity in the TW/cm 2 range, sufficient to contribute substantially to the beam nonlinearity, including supercontinuum generation [24].…”

Section: Introductionmentioning

confidence: 99%

White-light femtosecond Lidar at 100 TW power level

et al. 2013

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We characterized the white-light supercontinuum emission by a sub-petawatt laser system in the atmosphere via light detection and ranging measurements. As much as 1 J of supercontinuum is generated in the atmosphere, corresponding to a conversion efficiency of 30 %. This generation occurs at altitudes below 100 m. The high initial beam intensity results in the saturation of the number of self-guided filaments. Therefore, the “photon bath” surrounding the filaments strongly contributes to the white-light generation. These finding is well reproduced by numerical simulations based on the experimental parameters

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Section: Introductionmentioning

confidence: 99%

White-light femtosecond Lidar at 100 TW power level

et al. 2013

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“…This has acquired a form of new research status for potentially utilizing ultrashort laser pulses for cloud seeding [1][2][3][4][5][6]. The observation of the phenomenon in various conditions by several groups is now well established, and some basic processes at play are identified [7][8][9][10][11][12][13][14]. The challenges that are being addressed in the current pre-proposal are as follows: a.…”

Section: Introductionmentioning

confidence: 99%

Development of Cyber-Physical System for Laser-Based Controlled Cloud Seeding

Rai

2017

Asian J Pharm Clin Res

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Objective: This research encompasses of developing a cyber-physical system, i.e., a system which can control the physical process of cloud formation by utilizing the light detection and ranging technology to modulate its frequency while directed on aerosol cloud to control the movement of cloud, formation, and precipitation in a test-bed setting.Methods: This involves utilization of advanced algorithms, image processing techniques to model cloud behavior, and artificial intelligence to control the laser frequency modulation and pulse count, directed or incidence angle to understand the response between laser effects on aerosol cloud.Results and Discussion: It will enable studying the detailed effects of laser-induced cloud nucleation and also in modeling the cloud behavior with respect to the feedback loop between induced affect through lasers upon the aerosol cloud.

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“…Since the laser beam can propagate a few kilometres or tens of kilometres [1] , filaments itself and the appearance of nonlinear effects, such as supercontinuum spectrum generation [2,3] , terahertz radiation [4,5] , highorder harmonic generation [6,7] , have important value both in the study of basic physics and in practical applications such as the LIDAR [8] , remote sensing [9][10][11] , laser triggered lightning [12,13] , rain and snow precipitation [13,14] and so on.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen fluorescence induced by the femtosecond intense laser pulses in air

et al. 2016

High Pow Laser Sci Eng

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Our experiments show that external focusing and initial laser energy strongly influences filament generated by the femtosecond Ti-sapphire laser in air. The experimental measurements show the filament length can be extended both by increasing the laser energy and focal length of focusing lens. On the other hand, the plasma fluorescence emission can be enhanced by increasing the laser energy with fixed focal length or decreasing the focal length. In addition, the collapse distance measured experimentally are larger than the calculated ones owing to the group-velocity-dispersion effect. In addition, we find that the line widths of the spectral lines from N 2 is independent of filament positions, laser energies and external focusing.

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1-J white-light continuum from 100-TW laser pulses

Cited by 19 publications

References 27 publications

White-light femtosecond Lidar at 100 TW power level

White-light femtosecond Lidar at 100 TW power level

Development of Cyber-Physical System for Laser-Based Controlled Cloud Seeding

Nitrogen fluorescence induced by the femtosecond intense laser pulses in air

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