Abstract

An infrared meander-line waveplate has been modeled and measured over the 8 to 12μm spectral band in terms of its differential phase delay, axial ratio of the output polarization ellipse, and power throughput for angles of incidence between 0° and 60°. The study has been performed for planes of incidence parallel and perpendicular to the meander-line axis. The main significance is that the phase delay remains almost unaffected by the angle of incidence. Infrared meander-line retarders can thus be used well beyond the paraxial range as in low-f/# optical systems and in non-normal-incidence applications.

© 2007 Optical Society of America

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References

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  1. J. S. Tharp, J. M. López-Alonso, J. C. Ginn, C. F. Middleton, B. A. Lail, B. A. Munk, and G. D. Boreman, Opt. Lett. 31, 2687 (2006).
    [CrossRef] [PubMed]
  2. L. Young, L. Robinson, and C. Hacking, IEEE Trans. Antennas Propag. 21, 376 (1973).
    [CrossRef]
  3. M. Mazur and W. Zieniutycz, in 13th International Conference on Microwaves, Radar, and Wireless Communications (IEEE, 2000), pp. 78-81.
  4. J. Zürcher, Microwave Opt. Technol. Lett. 18, 320 (1998).
    [CrossRef]
  5. T. K. Wu, IEEE Microw. Guid. Wave Lett. 4, 199 (1994).
    [CrossRef]
  6. J. S. Tharp, B. A. Lail, B. A. Munk, and G. D. Boreman, "Design and demonstration of an infrared meanderline phase retarder," IEEE Trans. Antennas Propag. (to be published).
  7. B. A. Munk, Finite Antenna Arrays and FSS (Wiley-IEEE, 2003), appendix C.
    [CrossRef]
  8. D. Goldstein, Polarized Light, 2nd ed. (Marcel-Dekker, 2003).
    [CrossRef]

2006

1998

J. Zürcher, Microwave Opt. Technol. Lett. 18, 320 (1998).
[CrossRef]

1994

T. K. Wu, IEEE Microw. Guid. Wave Lett. 4, 199 (1994).
[CrossRef]

1973

L. Young, L. Robinson, and C. Hacking, IEEE Trans. Antennas Propag. 21, 376 (1973).
[CrossRef]

IEEE Microw. Guid. Wave Lett.

T. K. Wu, IEEE Microw. Guid. Wave Lett. 4, 199 (1994).
[CrossRef]

IEEE Trans. Antennas Propag.

J. S. Tharp, B. A. Lail, B. A. Munk, and G. D. Boreman, "Design and demonstration of an infrared meanderline phase retarder," IEEE Trans. Antennas Propag. (to be published).

L. Young, L. Robinson, and C. Hacking, IEEE Trans. Antennas Propag. 21, 376 (1973).
[CrossRef]

Microwave Opt. Technol. Lett.

J. Zürcher, Microwave Opt. Technol. Lett. 18, 320 (1998).
[CrossRef]

Opt. Lett.

Other

M. Mazur and W. Zieniutycz, in 13th International Conference on Microwaves, Radar, and Wireless Communications (IEEE, 2000), pp. 78-81.

B. A. Munk, Finite Antenna Arrays and FSS (Wiley-IEEE, 2003), appendix C.
[CrossRef]

D. Goldstein, Polarized Light, 2nd ed. (Marcel-Dekker, 2003).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

(a) Scanning electron microscope micrograph of the meander-line structure analyzed in this paper, with geometric parameters labeled. (b) Coordinate orientation for the calculation and measurement of the off-axis incidence behavior of a meander line. For clarity, only light incident at an angle θ in the plane of incidence α = 90 ° is shown.

Fig. 2
Fig. 2

Phase delay plots for the two orientations analyzed in this paper: α = 0 ° (top) and α = 90 ° (bottom). The prediction of the model is plotted as solid curves for three angles of incidence: θ = 0 ° (black curve), θ = 40 ° (dark gray), and θ = 60 ° (light gray). The experimental data are plotted as black triangles ( θ = 0 ° ) , dark gray circles ( θ = 40 ° ) , and light-gray squares ( θ = 60 ° ) .

Fig. 3
Fig. 3

Axial ratio plots for the case of a linearly polarized light oriented at 45 ° with respect to the meander-line orientation. The symbols and line conventions are the same as in Fig. 2.

Fig. 4
Fig. 4

Integrated (8 to 12 μ m ) transmittance as a function of angle of incidence for illumination by a 300 K blackbody.

Equations (1)

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T p , s ( θ , α ) = 8 μ m 12 μ m T p , s ( λ , θ , α ) Φ λ , b b ( λ , T = 300 ) d λ 8 μ m 12 μ m Φ λ , b b ( λ , T = 300 ) d λ ,

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