| CPC H01S 3/03 (2013.01) [G03F 7/70025 (2013.01); G03F 7/70891 (2013.01); H01S 3/0405 (2013.01); H01S 3/0407 (2013.01); H01S 3/041 (2013.01)] | 20 Claims |

|
1. A chamber device comprising:
an inner housing including a passage port through which light generated by excitation of laser gas at an internal space thereof passes;
an outer housing surrounding at least a part of the inner housing from a lateral side of a travel direction of the light; and
a partition wall arranged between the inner housing and the outer housing and fixed to the inner housing and the outer housing.
|