Changes in the Observed Shape of H6TPPS J-Aggerates by the Polarisation of the Incoming Light

Abstract

Samples of H6TPPS J aggregates and bundles, deposited on glass and aligned under nitrogen flow, were measured in a 2-photon microscopy setup. Changes in the polarization state of the incoming laser have shown a difference in the resulting 2-photon scanning of the same measured sample, revelling otherwise hidden features. In addition, tracing the response of certain areas under different polarisation can provide information about the arrangement of the dipoles in that area. This shows the significant role of polarisation in 2-photon measurement, and the need to consider such effects in the microscopy of biological samples.