1. Laser Materials Processing Division, Raja Ramanna Centre for Advanced Technology, Indore, 452 013, India 2. Naval Materials Research Laboratory, Shill-Badlapur Road, Ambernath, 421 506, India
Abstract:
We characterize thermal stability fof second harmonic generation (SHG) properties of four different Y-type polymers poled using corona poling method. These polymers are based on donor–acceptor–donor-type repeating unit with different aromatic moieties acting as donors and dicyanomethylene acting as an acceptor through conjugated bridge. The donor varies from different substituted benzene to phenothiazine. Polymer containing phenothiazine as donor showed higher SHG intensity and high temperature stability due to rigid repeating unit of phenothiazine compared to others with benzene in the main chain.