DYNAMIC BEHAVIOR IN THE ANGULAR-DISTRIBUTION OF EMISSION FROM A MICROMETER-SIZED ASYMMETRIC LIQUID JET

The dynamic behavior in the angular distribution; of emission was meas ured from an asymmetrically distorted liquid jet which was induced by laterally flowing gas. We observed that the intensity pattern was rest ricted to around phi similar to 90 degrees, above 2% of the distortion parameter eta. The fine structure of the intensity pattern was also r estricted to phi similar to 90 degrees, which is evidence of the direc tional emission of MDR (morphology-dependent resonance) lights. As eta increases, the intensity profile narrows down to phi similar to 90 de grees and then broadens at eta greater than or equal to 5%. We found t hat a broad peak shifts continuously with a linear relationship to eta , which should he related to the detailed shape of deformation. Broad split peaks were observed when the intensity of emission was substanti ally enhanced for efficient coupling, which is not expected from the r ay-optics model for an ideal elliptical microcavity.