Abstract
The properties and applications of laser modes with helical (vortex) phase front have attracted a great deal of attention at present (see, e.g., [1] and references therein). The Laguerre-Gaussian vortex nm-mode has the form: , where is the Laguerre polynomial, w= w0[1+ζ2]1/2, w0is the value of win the mode waist, mis the vortex charge. At m>0 these modes have the phase discontinuity at the center.
© 1998 IEEE
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