Article

Generation of hollow Gaussian beams by spatial filtering.

Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
Optics Letters (impact factor: 3.4). 09/2007; 32(15):2076-8.
Source: PubMed

ABSTRACT We demonstrate that hollow Gaussian beams can be obtained from Fourier transform of the differentials of a Gaussian beam, and thus they can be generated by spatial filtering in the Fourier domain with spatial filters that consist of binomial combinations of even-order Hermite polynomials. A typical 4f optical system and a Michelson interferometer type system are proposed to implement the proposed scheme. Numerical results have proved the validity and effectiveness of this method. Furthermore, other polynomial Gaussian beams can also be generated by using this scheme. This approach is simple and may find significant applications in generating the dark hollow beams for nanophotonic technology.

0 0
 · 
0 Bookmarks
 · 
51 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

binomial combinations
 
dark hollow beams
 
Fourier domain
 
hollow Gaussian beams
 
Michelson interferometer type system
 
nanophotonic technology
 
Numerical results
 
polynomial Gaussian beams
 
proposed scheme
 
significant applications
 
typical 4f optical system