中国物理B ›› 2013, Vol. 22 ›› Issue (11): 114209-114209.doi: 10.1088/1674-1056/22/11/114209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate):Using a single transistor–transistor logic modulated laser beam

Qusay M. A. Hassan, Hussain A. Badran, Alaa Y. AL-Ahmad, Chassib A. Emshary   

  1. Department of Physics, College of Education, University of Basrah, Basrah, Iraq
  • 收稿日期:2013-03-16 修回日期:2013-05-01 出版日期:2013-09-28 发布日期:2013-09-28

Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate):Using a single transistor–transistor logic modulated laser beam

Qusay M. A. Hassan, Hussain A. Badran, Alaa Y. AL-Ahmad, Chassib A. Emshary   

  1. Department of Physics, College of Education, University of Basrah, Basrah, Iraq
  • Received:2013-03-16 Revised:2013-05-01 Online:2013-09-28 Published:2013-09-28
  • Contact: Hussain A. Badran E-mail:badran_hussein@yahoo.com

摘要: 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.

关键词: nonlinear refractive index, thermo-optic coefficient, self-phase modulation, nonlinear optics

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.

Key words: nonlinear refractive index, thermo-optic coefficient, self-phase modulation, nonlinear optics

中图分类号:  (Beam trapping, self-focusing and defocusing; self-phase modulation)

  • 42.65.Jx
42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials) 78.66.Qn (Polymers; organic compounds)