Résumé
The phase-matching regime of high harmonics by means of variable-length gas cells was explored, and the coherence length of the process experimentally evaluated. Record conversion efficiencies were demonstrated in argon, in a regime where dipole phases play an important role. The results were explained by investigating how macroscopic yields of high harmonic generation sources may vary, even in absorption-limited conditions.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 193901 |
| Pages (de - à) | 193901/1-193901/4 |
| journal | Physical Review Letters |
| Volume | 90 |
| Numéro de publication | 19 |
| Les DOIs | |
| état | Publié - 16 mai 2003 |
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