Open Access

Creation of Needle of Transversely Polarized Beam in Vacuum by using Complex Phase Plate

K. Lalithambigai, Department of Physics, Chikkanna Government Arts College, Trippur, TN, India. C. Mohana Sundaram, Department of Physics, Periyar University, Salem, TN, India. P. M. Anbarasan, Department of Physics, Periyar University, Salem, TN, India. K. B. Rajesh rajeskb@gmail.com
Department of Physics, Periyar University, Salem, TN, India.

---

---

Abstract

The intensity distribution in the focal region for the tight focusing of double-ring-shaped azimuthally polarized beam with complex phase plate is studied on the basis of the vector diffraction theory. Here we report a new method that generates a transversely polarized light beam with sub diffraction beam size (0.488 λ) that propagates without divergence over a long distance (of about 8.6 λ) in free space. This work is important for optical manipulation and may find applications when using optical materials or instruments responsive to the transversal field only.

Full Text

Reference

---

Bomzon, Z., Gu, M., Shamir, Angular momentum and geometrical phases in tight-focused circularly polarized plane waves, Appl. Phys. Lett. 89, 2411-2421 (2006).

doi:10.1063/1.2402909

Cao, J., Chen, Q. and Guo, H., Creation of a controllable three dimensional optical chain by TEM01 mode radially polarized Laguerre–Gaussian beam, Optik 124, 2033-2036 (2013).

Doi:10.1016/j.ijleo.2012.06.057

Guo, H., Weng, X., Dong, X., Sui, G., Gao, X. and Zhuang, S., Three dimensional optical cage formed by TEM01 mode radially polarized Laguerre-Gaussian beam, J. Opt., 40, 206–212 (2011).

doi:10.1007/s12596-011-0055-8

Hao, X., Kuang, C., Wang, T. and Liu, X., Phase encoding for sharper focus of the azimuthally polarized beam, Opt. Lett. 35, 3928-3930 (2010).

doi:10.1364/OL.35.003928

Kozawa, Y. and Sato, S., Focusing property of a double-ring-shaped radially polarized beam, Opt. Lett. 31, 820-822 (2006).

doi:10.1364/OL.31.000820

Lalithambigai, K., Suresh, P., 173 Ravi, V., Prabakaran, K., Jaroszewicz, Z., Rajesh, K. B., Anbarasan, P. M., Pillai, T. V. S., Generation of sub wavelength super-long dark channel using high NA lens axicon, Opt. Lett. 37, 999–1001 (2012).

doi:10.1364/OL.37.000999

Richards, B., Wolf, E., Electromagnetic diffraction in optical systems, II. Structure of the image field in an aplanatic system, Proc. R. Soc. Lond. A Math. Phys. Sci. 253, 358– 379 (1959).

doi:10.1098/rspa.1959.0200

Tian, B. and Pu, J., Tight focusing of a double-ring-shaped, azimuthally polarized beam, Opt. Lett. 36, 2014-2016 (2011).

doi:10.1364/OL.36.002014

Tovar, A. A., Production and propagation of cylindrically polarized Laguerre–Gaussian laser beams, J. Opt. Soc. Am. A 15, 2705-2711 (1998).

doi:10.1364/JOSAA.15.002705

Youngworth, K. S. and Brown, T. G., Focusing of high numerical aperture cylindrical vector beams, Opt. Express 7, 77–87 (2000).

doi:10.1364/OE.7.000077

Yuan, G. H., Wei, S. B., Yuan, X. C., Nondiffracting transversally polarized beam, Opt. Lett. 36, 3479-3481 (2011).

doi:10.1364/OL.36.003479