An apparatus and method for generating a drive force in a downhole environment includes chambers of a reactant and a catalyst, respectively, that are maintained separate until selectively exposed to one another. The hinge having been provided thereon one portion of a co-operating latching arrangement for releasably securing in a closed position a second door. Portions of the lead frame having external electrical connections may have a thickness such that they are exposed through the packaging material. The other one of the adjacent second air-hole areas keeps a third distance from the first air-hole area. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. The modulator transfers a modulated wide laser pulse.