Blue second-harmonic generation and temporal stability of polyureasulfone films prepared by polymerization during poling

Cheng Ye; Pingrong Yu; George K.L. Wong

doi:10.1117/12.252940

3 October 1996 Blue second-harmonic generation and temporal stability of polyureasulfone films prepared by polymerization during poling

Cheng Ye, Pingrong Yu, George K.L. Wong

Author Affiliations +

Proceedings Volume 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications; (1996) https://doi.org/10.1117/12.252940
Event: Photonics China '96, 1996, Beijing, China

Abstract

Poled polyureasulfone thin films having excellent transparency from near UV to visible region have been prepared by carrying out additional polymerization of 1,4- phenylene diisocyanate and 4,4'-diaminodiphenyl sulfone simultaneously with poling. The polymerization process is monitored by in-situ second harmonic generation. Under optimal conditions, d₃₃ as large as 8.5 pm/V at a second harmonic wavelength of 532 nm has been obtained. SHG intensity decreased to about 84% of its initial value after having been kept at 100 degrees Celsius for over 1000 hours. Wavelength dispersion measurement of SHG coefficients indicates that d₃₃ of prepared poled films increases by about a factor of three at a second harmonic wavelength of 400 nm.

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Cheng Ye, Pingrong Yu, and George K.L. Wong "Blue second-harmonic generation and temporal stability of polyureasulfone films prepared by polymerization during poling", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); https://doi.org/10.1117/12.252940

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