TITLE

Wavefront Measurement for Laser-Guiding Diagnostic

AUTHOR(S)
Shiraishi, S.; Gonsalves, A. J.; Lin, C.; Nakamura, K.; Osterhoff, J.; Sokollik, T.; van Tilborg, J.; Geddes, C. G. R.; Schroeder, C. B.; Tóth, Cs.; Esarey, E.; Leemans, W. P.
PUB. DATE
November 2010
SOURCE
AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p127
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The wavefront of a short laser pulse after interaction in a laser-plasma accelerator (LPA) was measured to diagnose laser-guiding quality. Experiments were performed on a 100 TW class laser at the LOASIS facility of LBNL using a hydrogen-filled capillary discharge waveguide. Laser-guiding with a pre-formed plasma channel allows the laser pulse to propagate over many Rayleigh lengths at high intensity and is crucial to accelerate electrons to the highest possible energy. Efficient coupling of laser energy into the plasma is realized when the laser and the channel satisfy a matched guiding condition, in which the wavefront remains flat within the channel. Using a wavefront sensor, the laser-guiding quality was diagnosed based on the wavefront of the laser pulse exiting the plasma channel. This wavefront diagnostic will contribute to achieving controlled, matched guiding in future experiments.
ACCESSION #
55200209

 

Related Articles

  • Plasma Channel Diagnostic Based on Laser Centroid Oscillations. Gonsalves, A. J.; Nakamura, K.; Lin, C.; Osterhoff, J.; Shiraishi, S.; Schroeder, C. B.; Geddes, C. G. R.; Tóth, Cs.; Esarey, E.; Leemans, W. P. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p150 

    A technique has been developed for measuring the properties of discharge-based plasma channels by monitoring the centroid location of a laser beam exiting the channel as a function of input alignment offset between the laser and the channel. The centroid position of low-intensity (<1014 W cm-2)...

  • The BErkeley Lab Laser Accelerator (BELLA): A 10 GeV Laser Plasma Accelerator. Leemans, W. P.; Duarte, R.; Esarey, E.; Fournier, S.; Geddes, C. G. R.; Lockhart, D.; Schroeder, C. B.; Toth, C.; Vay, J.-L.; Zimmermann, S. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p3 

    An overview is presented of the design of a 10 GeV laser plasma accelerator (LPA) that will be driven by a PW-class laser system and of the BELLA Project, which has as its primary goal to build and install the required Ti:sapphire laser system for the acceleration experiments. The basic design...

  • Colliding Laser Pulses for Laser-Plasma Accelerator Injection Control. Plateau, G. R.; Geddes, C. G. R.; Matlis, N. H.; Cormier-Michel, E.; Mittelberger, D. E.; Nakamura, K.; Schroeder, C. B.; Esarey, E.; Leemans, W. P. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p180 

    Decoupling injection from acceleration is a key challenge to achieve compact, reliable, tunable laser-plasma accelerators (LPA) [1, 2]. In colliding pulse injection the beat between multiple laser pulses can be used to control energy, energy spread, and emittance of the electron beam by...

  • Stable generation of GeV-class electron beams from self-guided laser–plasma channels. Hafz, Nasr A. M.; Tae Moon Jeong; Il Woo Choi; Seong Ku Lee; Ki Hong Pae; Kulagin, Victor V.; Jae Hee Sung; Tae Jun Yu; Kyung-Han Hong; Tomonao Hosokai; Cary, John R.; Do-Kyeong Ko; Jongmin Lee // Nature Photonics;Sep2008, Vol. 2 Issue 9, p571 

    Table-top laser-driven plasma accelerators are gaining attention for their potential use in miniaturizing future high-energy accelerators. By irradiating gas jet targets with ultrashort intense laser pulses, the generation of quasimonoenergetic electron beams was recently observed. Currently,...

  • Status of the LILAC experiment. Saleh, N.; Han, P.; Keppel, C.; Gueye, P.; Yanovsky, V.; Umstadter, D. // AIP Conference Proceedings;2001, Vol. 569 Issue 1, p127 

    We present the status of the LILAC experiment [1], including results on the propagation of 30-fs duration laser pulses in plasmas of the requisite density, and measurements of the dark current [2]. We also discuss the status of a laser upgrade, an electron beam line and plans for the future.

  • On the Pointing Angle of Electron Beams from Laser Wakefield Accelerators. Hafz, N.; Lee, S. K.; Yu, T. J.; Lee, J.; Sung, J. H. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p161 

    Laser wakefield accelerators offer electron beams which could be useful for many applications. However, the problem of stabilizing the electron beam parameters has not been resolved yet. Here, we propose a method to minimize the electron beam pointing and report the generation of a relativistic...

  • Plasma Diagnostics of a Capillary Plasma Channel for Laser Guiding. Terauchi, Hiromitsu; Higashiguchi, Takeshi; Yugami, Noboru; Bobrova, Nadezhda A. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p238 

    We demonstrated the production of an optical waveguide in a capillary discharge-produced plasma using a cylindrical capillary. Plasma parameters of its waveguide were characterized by use of both a Normarski laser interferometer and a hydrogen plasma line spectrum. A space-averaged maximum...

  • Charge Diagnostics for Laser Plasma Accelerators. Nakamura, K.; Gonsalves, A. J.; Lin, C.; Sokollik, T.; Smith, A.; Rodgers, D.; Donahue, R.; Bryne, W.; Leemans, W. P. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p227 

    The electron energy dependence of a scintillating screen (Lanex Fast) was studied with sub-nanosecond electron beams ranging from 106 MeV to 1522 MeV at the Lawrence Berkeley National Laboratory Advanced Light Source (ALS) synchrotron booster accelerator. The sensitivity of the Lanex Fast...

  • Acceleration of Electrons in Modulated Plasma Channels with Radially Polarized Laser Pulses. Layer, B. D.; Palastro, J. P.; York, A.; Yoon, S.-J.; Elle, J.; Antonsen, T. M.; Milchberg, H. M. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p166 

    Two highly versatile experimental techniques are demonstrated for making preformed plasma waveguides with periodic structure capable of supporting the propagation of ultra-intense femtosecond laser pulses. These waveguides were made in hydrogen, nitrogen and argon plasmas with a length of 15 mm...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics