TY - JOUR
T1 - Experimental investigation of local properties and statistics of optical vortices in random wave fields
AU - Wang, W.
AU - Hanson, Steen Grüner
AU - Miyamoto, Y.
AU - Takeda, M.
PY - 2005
Y1 - 2005
N2 - We present the first direct experimental evidence of the local properties of optical vortices in a random laser speckle field. We have observed the Berry anisotropy ellipse describing the anisotropic squeezing of phase lines close to vortex cores and quantitatively verified the Dennis angular momentum rule for its phase. Some statistics associated with vortices, such as density, anisotropy ellipse eccentricity, and its relation to zero crossings of real and imaginary parts of the random field, are also investigated by experiments.
AB - We present the first direct experimental evidence of the local properties of optical vortices in a random laser speckle field. We have observed the Berry anisotropy ellipse describing the anisotropic squeezing of phase lines close to vortex cores and quantitatively verified the Dennis angular momentum rule for its phase. Some statistics associated with vortices, such as density, anisotropy ellipse eccentricity, and its relation to zero crossings of real and imaginary parts of the random field, are also investigated by experiments.
KW - 6-I optik
U2 - 10.1103/PhysRevLett.94.103902
DO - 10.1103/PhysRevLett.94.103902
M3 - Journal article
SN - 0031-9007
VL - 94
SP - 103902
JO - Physical Review Letters
JF - Physical Review Letters
IS - 10
ER -