SELFhyphen;LOCKING OF MODES IN A HIGHhyphen;PRESSURE CO2LASER WITH TRANSVERSE PULSE EXCITATION

摘要

An investigation has been made of the spontaneous selfhyphen;locking of axial modes in a transversely excited atmospheric (TEA) CO2laser of helical geometry. Laser emission was found to consist of 0.5hyphen;mgr;sec bursts of short periodic pulsations typically 5 nsec in duration with peak powers in the megawatt range. Reproducible pulsating patterns have been achieved with the use of SF6acting as mode selector in the optical resonator.