| Issue |
Europhys. Lett.
Volume 47, Number 1, July 1999
|
|
|---|---|---|
| Page(s) | 42 - 48 | |
| Section | Electromagnetism, optics, acoustic, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i1999-00348-5 | |
| Published online | 01 September 2002 | |
High-order harmonic amplitude modulation in two-colour phase-controlled frequency mixing
1
Max-Planck Institut für Quantenoptik, D-85748 Garching, Germany
2
Centre Lasers Intenses et Applications, Université de Bordeaux I
F-33405 Talence Cedex, France
Received:
25
March
1999
Accepted:
29
April
1999
Two-colour phase control of gas harmonic generation has been demonstrated using a 200-fs Ti:sapphire laser and its second harmonic. In the detection range covering the 7th to the 20th harmonic order, a modulation of up to 27% in the harmonic emission signal was observed by precisely varying the relative phase between the two colours. Simulations based on the single-particle response predict enhancement of the high harmonic efficiency by orders of magnitude for a given relative phase between the two colours.
PACS: 42.65.Ky – Harmonic generation, frequency conversion / 32.80.Rm – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
© EDP Sciences, 1999
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