Radiofrequency Discharge of the GINGERino Ring Laser (image) American Institute of Physics Share Print E-Mail Caption Radiofrequency discharge of the GINGERino ring laser. A helium-neon plasma is generated in the middle of one side of the ring through a pyrex capillary. Credit Belfi et al. Usage Restrictions This image may be used only with appropriate credit. 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.