July 2024
Intermediate to advanced
280 pages
12h 52m
English
Content preview from The Essential Handbook of Polymer Terms and Attributes
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116 Nonlinear Optical Polymers
Nonlinear optical polymers (NLOPs) refer to a kind of optical active polymer that shows nonlinearity when interacting with a strong external optical pulse such as laser. There are two major kinds of NLOPs: second-order and third-order.
Nonlinear Optical Effects
The first breakthrough work on NLOs was the discovery of second harmonic generation (SHG) by Franken and coworkers in 1961. The found the output frequency of a ruby laser (694.3 nm) was doubled into the ultraviolet range (347.15 nm) in their experiments (illustrated in Figure 116.1).
Second-Order and Third-Order NLOPs
Second-order NLOPs are capable of SHG. Normally this kind of polymer can be achieved by a polymer poling ...
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