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X-ray optics on the Z-Accelerator backlit with the Z-Beamlet Laser & Z-Petawatt Laser systems

Gonzales, Rita A.; Gurrieri, Thomas G.; Herrmann, Mark H.; Mulville, Thomas D.; Neely, Kelly A.; Rambo, Patrick K.; Rovang, Dean C.; Ruggles, Larry R.; Schwarz, Jens S.; Adams, Richard G.; Simpson, Walter W.; Sinars, Daniel S.; Smith, Ian C.; Speas, Christopher S.; Tafoya-Porras, Belinda T.; Wenger, D.F.; Young, Ralph W.; Edens, Aaron E.; Atherton, B.W.; Bennett, Guy R.; Campbell, David V.; Carroll, Malcolm; Claus, Liam D.; Geissel, Matthias G.

Abstract not provided.

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TYPE Conference YEAR 2007
OSTI

Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility

Review of Scientific Instruments

Link, Anthony; Chowdhury, Enam A.; Morrison, John T.; Ovchinnikov, Vladimir M.; Offermann, Dustin; Van Woerkom, Linn; Freeman, Richard R.; Pasley, John; Shipton, Erik; Beg, Farhat; Rambo, Patrick K.; Schwarz, Jens S.; Geissel, Matthias G.; Edens, Aaron E.; Porter, John L.

Using the physical process of ultraintense field ionization of high charge states of inert gas ions, we have developed a method of peak intensity measurement at the focus of high energy short pulse lasers operating in single shot mode. The technique involves detecting ionization products created from a low pressure gas target at the laser focus via time of flight detector. The observation of high ion charge states collected by the detector yields peak intensity at the focus when compared with the results obtained from well established tunnel ionization models. An initial peak intensity measurement of 5× 1016 W cm-2 was obtained for a 1.053 μm center wavelength, 0.4 J pulse with 1 ps pulse duration focused with an f5.5 off-axis parabola. Experiments with multijoule level, 500 fs laser pulses are on the way. © 2006 American Institute of Physics.

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TYPE Conference YEAR 2006
ScopusOSTI

Variable focal length on-and off-axis deformable concave and convex mirror and its application for thermal lens compensation

Schwarz, Jens S.; Rambo, Patrick K.; Smith, Ian C.

We have improved deformable mirror approach to allow good parabolic deformation for efficient thermal lens compensation. Our design uses an annulus to push onto the back surface of a flat mirror substrate, simply supported at the outer edge, thereby creating a parabolic deformation within the encircled area. We built an assembly using a 25.4 mm diameter, 1 mm thick mirror with a wedge of less than 10 arc seconds that was deformed with a 12 mm diameter annulus at the back of the mirror. Using a Shack-Hartman wavefront sensor we performed careful measurements to characterize the performance of the mirrors.

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TYPE Conference YEAR 2005
OSTI

Development of an efficient large-aperture high damage-threshold sol-gel diffraction grating

Rambo, Patrick K.; Schwarz, Jens S.; Smith, Ian C.; Ashley, Carol S.; Branson, Eric D.; Dunphy, Darren R.; Cook, Adam W.; Reed, Scott T.; Johnson, William Arthur.

In order to develop the next generation of high peak intensity lasers, new grating technology providing higher damage thresholds and large apertures is required. The current assumption is that this technical innovation will be multilayer dielectric gratings, wherein the uppermost layer of a thin film mirror is etched to create the desired binary phase grating. A variant of this is explored with the upper grating layer being a lower density gelatin-based volume phase grating in either sol-gel or dichromated gelatin. One key benefit is the elimination of the etching step.

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TYPE SAND Report YEAR 2005
OSTIDOI
Results 151–165 of 165
Results 151–165 of 165