High E-O coefficient polymers based on a chromophore containing isophorone moiety for second-order nonlinear optics[Electro-Optics]
- and others
Organic second-order nonlinear optical (NLO) materials have been intensely pursued for the past two decades. The superior nonlinearity, along with the inherent ultrafast response and large laser damage threshold, suggests that organic NLO materials are ideal for electro-optic and telecommunications applications. A high-{micro}{beta} chromophore APII utilizing isophorone as {pi}-conjugation bridge was processed into both PMMA guest host and crosslinked (XL) polyurethane network with various loading densities. High electro-optic coefficients, r{sub 33} = 30 pm/V (in PMMA) and r{sub 33} = 32 pm/V (in polyurethane) at 1.06 {micro}m were obtained. Alignment temporal stability ranged from 90 to 120 C for XL polymer network. There is virtually no intrinsic absorption loss at 1.3 {micro}m (solution measurement). Also noteworthy is that high optimum loading densities of this chromophore are attainable in both cases without detectable chromophore aggregation due to intermolecular electrostatic interactions.
- Research Organization:
- Univ. of Southern California, Los Angeles, CA (US)
- Sponsoring Organization:
- US Department of the Air Force
- OSTI ID:
- 20034083
- Country of Publication:
- United States
- Language:
- English
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