Definition of total internal reflection in English:

total internal reflection


mass nounPhysics
  • The complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle.

    • ‘By surrounding a transparent fibre core with a second material that has a lower refractive index, light in the inner core is trapped by total internal reflection.’
    • ‘We used two optical techniques developed recently to shed light on the process taking place after the fusion event: the laser trapping of a small bead and the evanescent wave illumination with total internal reflection.’
    • ‘The end of each fiber was polished at 40 deg to its longitudinal axis to produce total internal reflection of excitation light and collected fluorescence at this face.’
    • ‘We adjusted the angles of incidence of the laser beam such that total internal reflection took place at the interface of the quartz slide and the sample solution.’
    • ‘The technique uses the unique polarizations of evanescent waves generated by total internal reflection to excite the dipole moment of individual fluorophores.’