Graphical abstract (IMAGE) Nagoya University Caption In world first, scientists demonstrate continuous-wave lasing of deep-ultraviolet laser diode at room temperature Credit Issey Takahashi Usage Restrictions This may be used with appropriate credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.