CERENKOV 2ND-HARMONIC GENERATION REVISITED - EXISTENCE OF PHASE-MATCHING

Citation
R. Reinisch et G. Vitrant, CERENKOV 2ND-HARMONIC GENERATION REVISITED - EXISTENCE OF PHASE-MATCHING, Pure and applied optics, 7(4), 1998, pp. 747-756
Citations number
19
Categorie Soggetti
Optics
Journal title
ISSN journal
09639659
Volume
7
Issue
4
Year of publication
1998
Pages
747 - 756
Database
ISI
SICI code
0963-9659(1998)7:4<747:C2GR-E>2.0.ZU;2-Y
Abstract
We show that in Cerenkov second harmonic generation the phase-matching condition is not automatically satisfied. The new concept of a Cerenk ov phase-matching surface is introduced and the expression of the Cere nkov phase-matching condition is derived. We also show that the Cerenk ov scheme includes second harmonic generation at distributed couplers. For example, use of grating couplers leads to grating-assisted Cerenk ov second harmonic generation. These are important results which modif y the understanding of the physics underlying Cerenkov frequency doubl ing.