摘要：Microbeams
of visible light were studied using a tapered glass capillary. Transmittance of
laser light through capillaries with different inlet and outlet diameters was
measured. About several % of the transmittance was obtained and larger than 80%
was achieved in combining with an optical lens. It was found that the obtained
transmittance considerably depended on
the capillary shape, i.e., the taper angle. Density enhancement
of the extracted beam was derived and showed a strong focusing ability for
the tapered glass capillary. Propagation of visible light through the capillary
was discussed.
关键词：Light Microbeam; Tapered Glass Capillary; Transmittance; Propagation of Light; Density Enhancement
