Session CA: Poster Session (4:30-6:00PM)

4:30 PM–4:30 PM, Friday, October 14, 2011


Chair: Robert Berrington, Ball State University

Abstract ID: BAPS.2011.OSF.CA.6

Abstract: CA.00006 : Petawatt-Class Ultra-High-Peak-Power Laser Design for the SCARLET Laser Facility

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Authors:

  Patrick Poole
    (The Ohio State University)

  Chris Willis
    (The Ohio State University)

  Enam Chowdhury
    (The Ohio State University)

  Rebecca Daskalova
    (The Ohio State University)

  Linn Van Woerkom
    (The Ohio State University)

  Rick Freeman
    (The Ohio State University)

The OSU High Energy Density Physics (HEDP) group focuses on high-intensity ultra-fast laser experiments, especially those pertaining to fast-ignition fusion. A petawatt-scale upgrade designed to significantly increase the intensity of OSU's SCARLET laser. The beam will have 400 TW peak power at 800 nm wavelength with a 5 $\mu m$ focal spot, delivering $10^{22}$ W/cm$^{2}$ with a $<$ 40 fs pulse at a repetition rate of once per minute. To achieve this, SCARLET uses a 3-pass amplifier (Ti:Sapphire crystal) irradiated by two 25 J, ND:glass 527 nm pump lasers as well as Dual Chirped Pulsed Amplification (DCPA) by way of a new stretcher with a compact mirror-striped grating design to stretch the initial pulse from 25 fs to 800 ps. Several air-spaced achromatic doublets were designed in-house to serve as image-relay telescopes to and from the new amplifier; these have been optimized to minimize chromatic and spherical aberration within the 100 nm bandwidth pulse. Also presented are results from gain modeling performed to predict effects like red-shift and gain narrowing in amplification.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.OSF.CA.6