We have successfully confirmed laser action driven by the electrochemiluminescence (ECL) from an organic dye. In contrast to ordinary dye lasers, an ECL operated laser does not require an additional laser source to pump the dye and may offer advantages in terms of power, tunability and available wavelength range. However, the pumping rate hitherto achieved by ECL has been far below that necessary for laser action. We have fabricated a novel ECL device which consists of two electrodes a few micrometers apart with dye solution flowing between them. This structure not only enhances ECL intensity by redox cycling but also reduces the lasing threshold due to the property of the microcavity.

=> Molecular and Bio Science Research Group