A magneto-optical storage medium that protects against the effects of cross-talk, making it possible to further reduce the level of track density, and which also makes it possible to conduct high-density recordingplayback with a reduced magnetic field for erasure and a favorable level of playback signal quality. The cabin includes front pillars, upper pillars and rear pillars. An IR filter is bonded to the lens and an iris material is provided onto the IR filter. The selector selectively couples one of the first and the second input path to an input of the mixer. 96, and a material selected from the group consisting of either Ga1zAlzAs, where 0. An electrosurgical instrument manufactured by the method disclosed herein is also provided.