Abstract: In order to form a fine pattern at high speed with respect to a material such as quartz glass exhibiting a remarkable band gap, having a short wavelength at absorption edge of light, and having high bond energy between constituent atoms, laser beam being transparent as to a material to be worked is irradiated thereupon, at the same time, plasma is produced at a place close to an objective surface of the material to be worked, and ablation is generated on the objective surface of the material to be worked by means of interactions between the plasma and laser beam irradiated upon the material to be worked, thereby to work the material.

Abstract: A portable device is disclosed which when placed on the shoulder enables the user to comfortably carry bags with handles and objects with hooked handles. This device comprises two rectangular shaped identical half-bars, each having a top section with an adjacent ledge portion (8) running along the length of the top section; a bottom section having a plurality of hooks (7) positioned along its length; a pivot end portion (10) with an aperture through which the two half-bars are connected, permitting the half-bars to be rotated from a folded position where the ledge of the first half-bar is parallel to the ledge of the second half-bar, to an open position where the ledge portion of the first half-bar forms a 180 degrees angle with the ledge portion of the second half-bar; and a strap end portion (6) through which a strap for carrying is attached.