Abstract

We present a novel method for forming radially and azimuthally polarized beams by using computer-generated subwavelength dielectric gratings. The elements were deposited upon GaAs substrates and produced beams with a polarization purity of 99.2% at a wavelength of 10.6 µm. We have verified the polarization properties with full space-variant polarization analysis and measurement, and we show that such beams have certain vortexlike properties and that they carry angular momentum.

© 2002 Optical Society of America

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References

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2001 (2)

2000 (1)

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

1998 (1)

1996 (1)

1993 (1)

1986 (1)

1983 (1)

J. F. Nye, Proc. R. Soc. London Ser. A 387, 105 (1983).
[CrossRef]

1956 (1)

S. Pancharatnam, Proc. Ind. Acad. Sci. 44, 247 (1956).

Allen, L.

L. Allen, M. J. Padgett, and M. Babiker, in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 1999), Vol. XXXIX, pp. 291–370.
[CrossRef]

Babiker, M.

L. Allen, M. J. Padgett, and M. Babiker, in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 1999), Vol. XXXIX, pp. 291–370.
[CrossRef]

Blit, S.

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

Bomzon, Z.

Z. Bomzon, V. Kleiner, and E. Hasman, Opt. Lett. 26, 1424 (2001).
[CrossRef]

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

Collet, E.

E. Collet, Polarized Light (Marcel Dekker, New York, 1993).

Craighead, H. G.

Davidson, N.

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

Friesem, A. A.

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

Gaylord, T. K.

Hasman, E.

Z. Bomzon, V. Kleiner, and E. Hasman, Opt. Lett. 26, 1424 (2001).
[CrossRef]

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

Kim, G. H.

Kimura, W. D.

Kleiner, V.

Lopez, A. G.

Moharam, M. G.

Nye, J. F.

J. F. Nye, Proc. R. Soc. London Ser. A 387, 105 (1983).
[CrossRef]

Oron, R.

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

Padgett, M. J.

L. Allen, M. J. Padgett, and M. Babiker, in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 1999), Vol. XXXIX, pp. 291–370.
[CrossRef]

Pancharatnam, S.

S. Pancharatnam, Proc. Ind. Acad. Sci. 44, 247 (1956).

Schadt, M.

Stalder, M.

Swartzlander, G. A.

Tidwell, S.

Appl. Opt. (1)

Appl. Phys. Lett. (1)

R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett. 77, 3322 (2000).
[CrossRef]

J. Opt. Soc. Am. A (1)

Opt. Lett. (4)

Proc. Ind. Acad. Sci. (1)

S. Pancharatnam, Proc. Ind. Acad. Sci. 44, 247 (1956).

Proc. R. Soc. London Ser. A (1)

J. F. Nye, Proc. R. Soc. London Ser. A 387, 105 (1983).
[CrossRef]

Other (2)

L. Allen, M. J. Padgett, and M. Babiker, in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 1999), Vol. XXXIX, pp. 291–370.
[CrossRef]

E. Collet, Polarized Light (Marcel Dekker, New York, 1993).

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Figures (3)

Fig. 1
Fig. 1

(a) Geometry of the space-variant grating as well as an image of a typical grating profile taken with a scanning-electron microscope. The experimentally measured local azimuthal angles of the beam when the incident polarization is (b) right-hand circular and (c) left-hand circular are also shown.

Fig. 2
Fig. 2

Calculated real part of the instantaneous vector fields for the radial polarization formed (a) by the grating and (b)–(e) with additional spiral phase plates as shown.

Fig. 3
Fig. 3

Experimental far-field images for the beams in Fig. 2 as well as their calculated and measured cross sections. The geometry of the spiral phase plates is shown at the bottom left.

Equations (6)

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Kg=K0r,θcosβθ,rrˆ+sinβθ,rθˆ,
1rrrK0r,θ+K0r,θθ=0.
ϕ=2πr0/2Λ0lnr/r0-θ.
E=cos θ,sin θT exp-iθ.
E=½1,iT exp-i2θ+1,-iT.
Jz=12i=L,Rσi+liω=lp/ω=12πφpds-1ω,

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