The present invention provides a slab type gas laser for generating an excellent output laser beam having substantially Gaussian intensity distribution when it is focused by the lens. 7 ounces per square yard and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. The alteration in assignment can be realized by disconnecting a fuse element incorporated in a SD generating circuit. The communication device may be operable to store the determined characteristics, corresponding temporal information andor spatial information for the sensed one or more objects, andor signal propagation characteristics within a surrounding communication environment of the communication device. In a further aspect of the present invention, the optical detection configuration may be scaled up and implemented in a multi-channel CE system that comprises multiple capillary separation channels. The clip can be formed by extrusion, with the hinges optionally coextruded from a more-resilient material.