Optical Axis Perturbation Analysis for the Unit-Magnification Multipass System

Figure 2

Axial and radial misalignment analysis of a spherical mirror . (a) Axial displacement of along the translational axis . (b) Axial displacement of along the translational axis . (c) Definition of a mirror’s angular misalignments and (d) angular misalignment of the spherical mirror around rotational axis . is the incident angle, , the blue solid arc, is the mirror’s initial position, and in the red solid arc in (a), (b), (c), and (d) are the position of the mirror after possible axial or angular perturbations. , , , , and are the reflecting points. is a point on ray ; and are the curvature centers of and . , , and are three translational axes (right hand); , , and are three rotational axes (right hand); and are two parallel incident rays; is an incident ray; and are two reflection rays; are the coordinate axes (left hand) of the incident ray; are the coordinate axes of the reflected ray; is the angle between line and line ; is the angle between line and line ; is the angle between line and line ; is the distance between and ; is the distance between and ; is the distance between and .

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