Patent ID: 8958453
Filing Date: 2015-02-17
Classification: H01S

Abstract:
1. A transverse flow type laser oscillator comprising: a reciprocating type optical resonator having a reflecting mirror and an output mirror; a laser medium for amplifying light, provided in the optical resonator; and a polarization selecting element for controlling the oscillated light to linear polarization, provided in the optical resonator; wherein the reflecting mirror is an orthogonal mirror having two reflecting surfaces orthogonal to each other, and the polarization selecting element is arranged such that a polarization direction of the oscillated light is parallel to a reference axis set in a plane perpendicular to an optical axis of the optical resonator, the orthogonal mirror is arranged such that the polarization direction of the oscillated light is parallel to a valley line of the orthogonal mirror, a laser gas flow direction is set in a first direction perpendicular to the optical axis of the optical resonator, and a discharge direction is set in a second direction perpendicular to the optical axis and the first direction, and the reference axis is arranged to intersect with the discharge direction at an angle of 45 degrees.