4.4 Rapid Modulation of Circular Polarisation States for Circular …
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Fig. 4.6 a Phase advances δ s and δ p of s- and p-polarised light, respectively, along with the phase
shift between the s and p components δ, upon reflection inside a silicon prism as a function of
incidence angle θ i . The refractive index of the silicon is taken to be n = 3.425. b Schematic diagram
of the THz-TDS setup used to convert linearly polarised THz pulses produced by the multi-pixel
PCE into circularly polarised pulses, and then detect them in a polarisation-resolved manner
and focused onto a 500 µm-thick, [111]-surface normal ZnTe detection crystal by a
second f = 50.8 mm off-axis parabolic gold mirror. The FDTO-coated glass has a
high reflectivity at THz frequencies but is transparent in the visible range, allowing
the gate and THz beams to be coupled together for EOS.
85
Fig. 4.6 a Phase advances δ s and δ p of s- and p-polarised light, respectively, along with the phase
shift between the s and p components δ, upon reflection inside a silicon prism as a function of
incidence angle θ i . The refractive index of the silicon is taken to be n = 3.425. b Schematic diagram
of the THz-TDS setup used to convert linearly polarised THz pulses produced by the multi-pixel
PCE into circularly polarised pulses, and then detect them in a polarisation-resolved manner
and focused onto a 500 µm-thick, [111]-surface normal ZnTe detection crystal by a
second f = 50.8 mm off-axis parabolic gold mirror. The FDTO-coated glass has a
high reflectivity at THz frequencies but is transparent in the visible range, allowing
the gate and THz beams to be coupled together for EOS.