Imaging of high harmonic radiation emitted during the interaction of a 20 TW laser with a solid target
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)
- Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2AZ (United Kingdom)
- Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX (United Kingdom)
We present images of the source of extreme ultraviolet (XUV) harmonic emission at a wavelength of 220 {Angstrom} from the interaction of a 20 TW, 1.053 {mu}m Nd:glass laser beam focused to intensities up to 4{times}10{sup 18} Wcm{sup {minus}2} onto a solid target. From these measurements we determine an upper limit to the source size and brightness of the harmonic emission to show its efficacy as a novel source of short-pulse, coherent XUV radiation. We also demonstrate the empirical scaling of the harmonic generation efficiency with irradiance up to 10{sup 19} W{mu}m{sup 2}cm{sup {minus}2}, and extrapolate to estimate the possible source brightness at higher irradiances. These source brightnesses are compared to those available from an x-ray laser system. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 467193
- Journal Information:
- Journal of Applied Physics, Vol. 81, Issue 5; Other Information: PBD: Mar 1997
- Country of Publication:
- United States
- Language:
- English
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