Protective multiwindow cartridge assembly

A laser system for performing a material modification process on a workpiece comprising:

• a laser source configured to generate a processing laser beam;
• and
• a laser head, the laser head configured to receive the processing laser beam from the laser source and including:
• focusing optics configured to focus the proces laser beam;
• a multiwindow cartridge assembly disposed downstream of the focusing optics, the multiwindow cartridge assembly including:
• a window mount configured to support and rotate a transparent window. about a rotation axis;
• an aperture configured for permitting passage of the processing laser beam along an optical axis, the optical axis passing through a processing position on the transparent window;
• a housing for enclosing at least a portion of the transparent window and the window mount and configured to form at least a portion of the aperture;
• and
• a rotation mechanism configured to engage with at least a portion of the window mount for rotating the transparent window about the rotation axis to rotational positions, the rotational positions including the processing position.

A laser processing head, comprising:

• focusing optics configured to focus a processing laser beam;
• a multiwindow cartridge assembly disposed downstream of the focusing optics, the multiwindow cartridge assembly including:
• a window mount configured to support and rotate a transparent window about a rotation axis;
• an aperture configured for permitting passage of the processing laser beam along an optical axis, the optical axis passin g through a processing position on the transparent window;
• a housing for enclosing at least a portion of the transparent window and the window mount and configured to form at least a portion of the aperture;
• and
• a rotation mechanism configured to engage with at least a portion of the window mount for rotating the transparent window about the rotation axis to rotational positions, the rotational positions including the processing position.