Phase-matched second-harmonic generation from free-standing periodically stacked polymer films
- 13 September 1993
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (11) , 1462-1464
- https://doi.org/10.1063/1.109656
Abstract
Visible green light has been observed by quasi-phase-matched second-harmonic generation from a periodic stack of free-standing poled polymer films, when pumped by a cw mode-locked near-infrared laser. The total thickness of the polymer film and phase-matching length was 300 μm with a conversion efficiency of 10−6–10−5 depending on absorption. A polymer thin film processing technique is described for this application that could make large area poled and stretched films with enhanced nonlinear optical susceptibilities.Keywords
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