There is provided a laser system having a cylindrically-shaped annular mirror with at least one opening in its surface; a pair of planar metallic electrodes disposed proximate opposite edges of the annular mirror, normal to the axis of the annular mirror, the electrodes configured to have an RF field applied between them; a pair of end mirrors disposed at said at least one opening; and a ceramic material in the form of a disc, disposed in the internal volume of the annular mirror, the ceramic material having a series of channels formed therein such that they generate a zig-zag pathway in the ceramic material, wherein (i) the zig-zag path, when filled with a gain medium, (ii) the annular mirror and (iii) the pair of end mirrors, together constitute a laser cavity.

The present disclosure is to provide a shape of a surface mount type optical module to be mounted on a surface of a system board or package submount, and is to provide a compact and lightweight optical module attachment/detachment apparatus that performs the mounting (attachment) and separation of the optical module in a confined space by automatically performing optical module loading/unloading, optical module alignment, and laser soldering to facilitate attachment and detachment of the optical module. The attachment/detachment apparatus includes a body frame; a fixing part for fixing the body frame to the board; a gripper for gripping the optical module; an aligning part for aligning the position of the optical module with respect to the board; and a laser part which irradiates a laser for non-contact bonding between the optical module and the board.