Stable Emission from a D-Shaped Semiconductor Laser (video) Yale University Share Print E-Mail Loading video... Caption This video shows the numerically calculated field distribution inside a D-shaped cavity and the measured emission from the straight segment of the cavity boundary. Credit Cao, Hess, et al. Usage Restrictions None Share Print E-Mail 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.