H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/036 (2006.01) H01S 3/034 (2006.01)
Patent
CA 2043512
ABSTRACT A gas laser apparatus having transparent laser windows provided on a laser chamber body, in which operating gases is sealed if necessary, comprising circulation means connected to the laser chamber body through an intake port and a discharge port for circulating gases within the laser chamber body and filtration means disposed in said circulation means, further comprising cutoff means for preventing the laser windows from being stained and open and closeably cutting off between the laser chamber body and the laser windows, and having a construction wherein in replacing the laser window, the cutoff means is once placed in a cutoff state, and the laser window is separated from the laser chamber body to place the laser window.
Oeda Yasuo
Ohmata Ken
Shibata Hideaki
Terada Mitsugu
Terashi Yuichiro
Mitsui Petrochemical Industries Ltd.
Oeda Yasuo
Ohmata Ken
Shibata Hideaki
Smart & Biggar
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