Logarithmic axicon characterized by scanning optical probe system.
A scanning optical probe system is proposed to measure a logarithmic axicon (LA) with subwavelength resolution. Multiple plane intensity profiles measured by a fiber probe are interpreted by solving an optimization problem to get the phase retardation function (PRF) of the LA. Experimental results show that this approach can accurately obtain the PRF with which the optical path difference of the generated quasi-nondiffracting beam in the propagation is calculated.
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, China.
Zhaolou
Z
Cao
Keyi
K
Wang
Qinglin
Q
Wu