Patent ID: 8223815
Filing Date: 2012-07-17
Classification: H01S

Abstract:
1. A recirculating gas laser comprising: a chamber containing laser gas and providing a cyclic path for the laser gas; a fan circulating the laser gas along the cyclic path; at least two discharge modules positioned within the chamber at separate locations along the cyclic path; independently triggerable high voltage pulse modules attached to each discharge module for generating an electrical discharge in the laser gas at the discharge modules; optical elements defining at least one resonant laser cavity holding the two discharge modules; and at least two acoustic baffles placed at least one between each of the discharge modules along the cyclic path such that the laser gas will flow alternately through a baffle and a discharge module as the laser gas follows the cyclic path, the acoustic baffles providing a greater impedance to shock waves caused by operation of the discharge module than to fan circulated gas.