Abstract A thermal lens technique is adopted using a single modulated continuous wave (cw) 532-nm laser beam to evaluate the nonlinear refractive index n2, and the thermo-optic coefficient dn/dT, in polymer Poly (1-naphthyl methacrylate) (P-1-NM) dissolved in chloroform, tetrahydrofuran (THF), and dimethyl sulfoxide (DMSO) solvents. The results are compared with Z-scan and diffraction ring techniques. The comparison reveals the effectiveness and the simplicity of the TTL modulation technique. The physical origin is discussed for the obtained results.
Corresponding Authors:
Hussain A. Badran
E-mail: badran_hussein@yahoo.com
Cite this article:
Qusay M. A. Hassan, Hussain A. Badran, Alaa Y. AL-Ahmad, Chassib A. Emshary Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate)：Using a single transistor–transistor logic modulated laser beam 2013 Chin. Phys. B 22 114209
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