@article{oai:repo.qst.go.jp:00075586, author = {水野英之 and 赤木, 浩 and 坪内, 雅明 and 板倉, 隆二 and 香月浩之 and 柳, 久雄 and Akagi, Hiroshi and Tsubochi, Masaaki and Itakura, Ryuuji}, issue = {5}, journal = {Japanese Journal of Applied Physics}, month = {May}, note = {Organic semiconductor microcavities forming strongly-coupled exciton polaritons are interesting system due to their nonlinear coherent emission observed even at room temperature. Here we investigate the incident angle and photon energy dependent photoemission from a planar organic microcavity to evaluate the relaxation efficiency toward the bottom of the lower polariton branch. We observe nonlinear increase of the vertical emission from the microcavity when the sample is pumped resonantly in the lower polariton branch with the incident angle of 30 to 55 degrees. The observed results support the fast and efficient relaxation of organic microcavity polaritons within the lower polariton branch.}, title = {Incident angle and photon energy dependence of polariton lasing in an organic microcavity}, volume = {58}, year = {2019} }