Second-harmonic generation in local modes of a truncated periodic structure
Trull Silvestre, Jose Francisco (Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear)
Corbalán, R. (Ramón)
(Universitat Autònoma de Barcelona. Departament de Física)
Vilaseca, Ramon (Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear)
Martorell, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Date: |
1995 |
Abstract: |
We present an experimental study of the generation of second-harmonic light in a one-dimensional periodic structure truncated by the introduction of a defect in the central period. We observed an enhancement of the nonlinear interaction in the vicinity of the defect when the second-harmonic wave was excited for modes within the forbidden zone or stop band. We also observed an enhancement near the band edge, where the group velocity approaches zero. Second-harmonic generation is completely suppressed for local modes within the forbidden band other than the defect mode. |
Rights: |
Tots els drets reservats. |
Language: |
Anglès |
Document: |
Article ; recerca ; Versió publicada |
Subject: |
Òptica |
Published in: |
Optics letters, Vol. 20, No. 17 (1 September 1995) , p. 1746-1748, ISSN 0146-9592 |
DOI: 10.1364/OL.20.001746
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