Investigation of polyisocyanates as second harmonic generating materials
Abstract
The project was undertaken to investigate the use of polyisocyanates (PICs) as second harmonic generating (SHG) material. Experiments were performed to determine the molecular second order susceptibility, and to fabricate a structure capable of SHG. The experimental results were either inconclusive or negative. Poly(n-hexyl isocyanate) (PHIC) and poly (dioxolane isocyanate) (PSIC) were studied. PHIC was obtained with molecular weights (M(sub n)) of 20,000 and 60,000, with a narrow polydispersity of 1.4. A very limited quantity of PSIC was available, with an undetermined molecular weight and and polydispersity in the range of 3 to 4.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- November 1991
- Bibcode:
- 1991STIN...9227366S
- Keywords:
-
- Dielectric Properties;
- Harmonic Generators;
- Isocyanates;
- Molecular Weight;
- Neodymium Lasers;
- Polypeptides;
- Electric Fields;
- Fabrication;
- Nonlinear Optics;
- Polymers;
- Electronics and Electrical Engineering