High Repetition Rate Diode Pumped Er:Glass Laser
Eye safe lasers operating around 1540 nm have the highest permissible ocular exposures accepted by the ANSI2.136.1-1993 standard (1J/cm2 for single pulses). Er: Glass material directly generates this wavelength. High repetition rate operation is possible by diode pumping where heat generation is minimized. Under second phase of DRDO Photonics Programme two prototypes of high repetition rate eye safe lasers have been developed capable of operating upto 20 Hz.