Numerical simulation of evanescent Bessel beams and apodization of evanescent field in near-field optical virtual probe

A near-field optical virtual probe based on the principle of near-field evanescent wave interference can be used in optical data storage, nano-lithography, near-field imaging and optical manipulation etc. The best choice of evanescent wave interference is evanescent Bessel beams that have the characteristics of both propagating Bessel beams and evanescent wave. It is concluded that evanescent Bessel beams is an evanescent wave with the characteristics of diffraction free and radial polarization. These characteristics lead to several advantages in near-field optics: the focus of radially polarized light can be quite smaller than the one of linear polarized light used commonly and diffraction free can bring in constant intensity distribution in a certain range. Meanwhile, based on the concept of conventional apodization, the idea of apodization of evanescent field is proposed to overcome some disadvantages of evanescent Bessel beams, such as the big side lobe and spread of transversal intensity. In this paper, Finite Difference Time Domain (FDTD) method is adopted to simulate the evanescent Bessel beams. Several parameters are considered as variants changeable to get the different simulation results. The better performance of the side lobe suppression and the narrow spot size are discussed. This work may be important to the application of near-field optical virtual probe in the future.

[1]  U. Schwarz,et al.  Stimulated anti-Stokes Raman scattering with Bessel beams in hydrogen gas , 2003 .

[2]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[3]  Nikolay A. Khilo,et al.  Evanescent Bessel light beams , 2001, Lightmetry and Light and Optics in Biomedicine.

[4]  M. R. Lapointe,et al.  Review of non-diffracting Bessel beam experiments , 1992 .

[5]  P. Muys,et al.  Direct generation of Bessel beams. , 2002, Applied optics.

[6]  Mattias Marklund,et al.  Nonlinear Bessel beams , 2003 .

[7]  D. Courjon,et al.  An all-fiber device for generating radially and other polarized light beams , 2002 .

[8]  M Stalder,et al.  Linearly polarized light with axial symmetry generated by liquid-crystal polarization converters. , 1996, Optics letters.

[9]  Zdeněk Bouchal,et al.  Non-diffractive Vector Bessel Beams , 1995 .

[10]  J. Durnin.  Exact solutions for nondiffracting beams. I. The scalar theory , 1987 .

[11]  D. Van Labeke,et al.  Bessel beams as virtual tips for near‐field optics , 2003, Journal of microscopy.

[12]  S. Ruschin,et al.  Evanescent Bessel beams , 1998 .

[13]  S. N. Kurilkina,et al.  Vector properties of Bessel light beams , 2001, Other Conferences.

[14]  Giovanni Volpe,et al.  Generation of cylindrical vector beams with few-mode fibers excited by Laguerre-Gaussian beams , 2004 .

[15]  K. Dholakia,et al.  Interfering Bessel beams for optical micromanipulation. , 2003, Optics letters.

[16]  Addressing atoms in optical lattices with Bessel beams. , 2003, Optics letters.

[17]  Kishan Dholakia,et al.  An experiment to study a “nondiffracting” light beam , 1999 .

[18]  S. Mishra,et al.  A vector wave analysis of a Bessel beam , 1991 .

[19]  Anatol A. Ryzhevich,et al.  New method of formation of high-order Bessel light beams using biaxial crystals , 2001, Laser Optics.

[20]  Numerical simulation analysis of a near-field optical virtual probe , 2002 .