Ultrafast nonresonant third-order optical nonlinearity of a conjugated 3,3[sup ′]-bipyridine derivative from 1150 to 1600 nm

Chen, Qiying; Sargent, Edward H.; Leclerc, Nicolas; Attias, André-Jean
June 2003
Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4420
Academic Journal
A conjugated 3,3'-bipyridine derivative, an apolar structure of donor-acceptor-acceptor-donor (D-A-A-D) type was designed and characterized for third-order optical nonlinearity using Z-scan technique in the wavelength range of 1150-1600 nm. Z-scan spectra reveal a positive Kerr coefficient across this wavelength range with n[SUB2] = (4.6 ± 0.7) × 10[SUP-6] cm[SUP2]/GW at 1550 nm accompanied by negligible nonlinear absorption for wavelength around 1550 nm, indicating ideal figures of merit for applications in ultrafast all-optical switching.


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