Observation of Phase-Matched Relativistic Harmonic Generation

S.-Y. Chen; A. Maksimchuk; E. Esarey; D. Umstadter

doi:10.1103/PhysRevLett.84.5528

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Observation of Phase-Matched Relativistic Harmonic Generation

S.-Y. Chen, A. Maksimchuk, E. Esarey, and D. Umstadter

Phys. Rev. Lett. 84, 5528 – Published 12 June 2000

Abstract

Phase-matched relativistic harmonic generation in plasmas is observed for the first time. Third-harmonic light is detected and discriminated spectrally and angularly from the harmonics generated from competing processes. Its angular pattern is a narrow forward-directed cone, which is consistent with phase matching of a high-order transverse mode in a plasma. The signal level is found to be on the same order of magnitude for a circularly polarized pump pulse as for a linearly polarized pump pulse.

Received 2 July 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.5528

Authors & Affiliations

S.-Y. Chen^1,*, A. Maksimchuk¹, E. Esarey², and D. Umstadter¹

¹Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109
²Center for Beam Physics, Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720

^*Present address: Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan.

A Cone of Coherent Light

Phys. Rev. Focus 5, 25 (2000)

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Vol. 84, Iss. 24 — 12 June 2000

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