High harmonic generation in a semi-infinite gas cell.

  title={High harmonic generation in a semi-infinite gas cell.},
  author={Julia Sutherland and Eric Christensen and Nathan Powers and S Rhynard and J. Painter and Justin B Peatross},
  journal={Optics express},
  volume={12 19},
Ten-millijoule 35-femtosecond laser pulses interact with a cell of helium or neon that extends from a focusing lens to an exit foil near the laser focus. High harmonic orders in the range of 50 to 100 are investigated as a function of focal position relative to the exit foil. An aperture placed in front of the focusing lens increases the brightness of… CONTINUE READING