High-Order Harmonic Generation and Quasiphase Matching in Xenon Using Self-Guided Femtosecond Pulses

Hans Rudiger Lange (1) , Arnaud Chiron (2) , Jean-François Ripoche (1) , André Mysyrowicz (1) , P. Breger (3) , P. Agostini (3)

1 LOA - Laboratoire d'optique appliquée
2 Dipartimento di Fisica
3 SPAM - Service des Photons, Atomes et Molécules

Ultrashort self-guided laser pulses are employed to generate high-order harmonics in noble gases. Interference fringes between fundamental and harmonic waves over several cm reveal a long range longitudinal coherence of the generated harmonics. Quasiphase matching is demonstrated for the third harmonic wave.

Keywords: filamentation; nonlinear optics; high-order harmonics

Domains: Optics [physics.optics]

Hans Rudiger Lange, Arnaud Chiron, Jean-François Ripoche, André Mysyrowicz, P. Breger, et al.. High-Order Harmonic Generation and Quasiphase Matching in Xenon Using Self-Guided Femtosecond Pulses. Physical Review Letters, 1998, 81 (8), pp.1611-1613. ⟨10.1103/PhysRevLett.81.1611⟩. ⟨hal-00465601⟩