Abstract: Apparatus and methods for generating mid-IR frequency combs using intra-pulse DFG. A mode-locked pulse generation laser generates near-IR pulses which are amplified. The amplified pulses are spectrally broadened by a nonlinear element, for example a normal dispersion highly nonlinear fiber (ND-HNLF) to generate broadened pulses. The nonlinear spectral broadening element is a transparent dielectric material having a cubic nonlinear response. Broadened pulses are temporally compressed to generate short, high-power pulses which few-cycle conditioned pulses which are ready for the intrapulse DFG process. The DFG block generates a mid-IR comb by difference frequency generation. It might comprise an orientation patterned GaP (OP-GaP) crystal or a poled lithium niobate (PPLN) crystal.

Abstract: Apparatus and methods for generating mid-IR frequency combs using intra-pulse DFG. A mode-locked pulse generation laser generates near-IR pulses which are amplified. The amplified pulses are spectrally broadened by a nonlinear element, for example a normal dispersion highly nonlinear fiber (ND-HNLF) to generate broadened pulses. The nonlinear spectral broadening element is a transparent dielectric material having a cubic nonlinear response. Broadened pulses are temporally compressed to generate short, high-power pulses which few-cycle conditioned pulses which are ready for the intrapulse DFG process. The DFG block generates a mid-IR comb by difference frequency generation. It might comprise an orientation patterned GaP (OP-GaP) crystal or a poled lithium niobate (PPLN) crystal.

Abstract: A C-clamp has a bearing pad at one end of the C-shaped frame configuration, and another bearing pad on a clamping shaft moveable axially in the other end of the frame. A replaceable force-transfer member interengages with one of the pads, and is preferably held in place with a spring-loaded detent.

Abstract: A machine for separating an oil film from a supporting liquid elevates the oil from its original position with an endless belt, and then transfers the oil from the belt to a rotating disc from which it is wiped into a drainage trough. The belt system is driven from the disc, and is constructed as an attachment to a self-contained disc machine capable of functioning without the belt system when the disc can intersect the surface of the liquid. The unit is thus adaptable to installations where the liquid level is far below the rim of the accumulating tank where the machine is mounted, and where there is substantial variation in the liquid level.

Abstract: A complete dishwasher and sink assembly, including equipment usually installed separately, forms a unit that can be inserted in a cut-out in a countertop, and supported and secured in position at a peripheral flange. The connections to the associated utilities are positioned for maximum convenience to standard locations. A sink is pivotally mounted to provide a cover for the dishwasher chamber, and stiffener-deflector arrangements are provided to assure that the interior spray does not produce leakage out to the countertop through ventilation passages at the peripheral flange. Spray is applied to racks of dishes, preferably from rotating spray heads mounted on a movable carrier, with the supply of water to the spray heads being conducted via the hollow interior of the carrier and also the hollow interior of a sequence of interconnected links. The rotatable spray heads are also hollow, with molded projections forming directional jet orifices.

Abstract: A C-clamp has a bearing pad formed on a plug having a body portion removably received within a bore in one extremity of the clamp frame. The bore is coaxial with the clamping rod movably mounted in the opposite extremity of the frame. The bore is intersected by a slot receiving a cable connector, with the usual hole in the connector normally traversed by the plug, and in firm electrical contact therewith.The clamp is also preferably provided with a tubular member having the exterior thereof in threaded engagement with the opposite frame extremity. The clamping shaft is slidably received in the tubular member, and a one-way rotative interlock is provided between the shaft and the tubular member in the direction to induce movement of the tubular member toward the pad in the thread system. A brake is incorporated for restraining the rotation between the tubular member and the frame.