Phase-Matched Second Harmonic Generations in Poled Polymer Films Based on Poly (methyl methacrylate) Containing a p-Aminophenyl-cyclobutenedione Moiety as the Side Chains

Autor: Lyong Sun Pu, Keisuke Sasaki, Takao Tomono, Takeshi Kinoshita, Yasunari Nishikata, Takafumi Sassa
Rok vydání: 1993
Předmět:
Zdroj: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 227:113-131
ISSN: 1058-725X
DOI: 10.1080/10587259308030965
Popis: Poled polymer films containing a nonlinear optical active moiety (cyclobutenedione derivative) as the side chains were prepared and applied to frequency doublings in guided-wave structures. A (p-aminophenyl) cyclobutenedione containing monomer, 1-{4-[N-(2- methacryloyloxyethyl)-N-methyl-aminol-phenyl}-2-methylamino-cyclobutene -3,4-dione [CD1-MA was newly synthesized. For less than 20 wt% concentration, amorphous copolymers of CD1-MA with methyl methacrylate showed the glass transition at around 125°C. The copolymers were crystalline at higher dye concentrations. The d33 value of the poled polymer film with 10 wt% of CD1-MA concentration was estimated as 8.1 pm.V−1 by the Maker fringe method. Second harmonic waves of Nd:YAG laser (1064 nm) were observed in three-layer optical waveguides (air / poled polymer / pyrex glass) for the collinear type and the Cerenkov type phase matchings.
Databáze: OpenAIRE