Exciton optical absorption coefficients and refractive index changes in a strained InAs/GaAs quantum wire: The effect of the magnetic field

► Magnetic field induced exciton binding energy is investigated in a strained InAs/GaAs quantum wire. ► The strain contribution to the potential is determined through deformation potentials. ► The interband emission energy of strained InAs/GaAs wire is investigated with the various structural parameters. ► Magnetic field induced photoionization cross section of the exciton is studied. ► The optical properties strongly depend on the incident optical intensity and the magnetic field.