Abstract: The present disclosure relates to a laser diode system. The system may have at least one laser diode emitter having a substrate, at least one laser diode supported on the substrate, and a facet which a laser beam generated by the laser diode is emitted. A cooling subsystem is included which is disposed in contact with the substrate of the laser diode emitter. The cooling subsystem includes a plurality of cooling fins forming a plurality of elongated channels for circulating a cooling fluid therethrough to cool the laser diode emitter. The cooling fluid also flows over the facet of the laser diode emitter.

Abstract: The present invention relates to a dual-labeled nucleotide comprising a fluorescent label and a quencher of that fluorescent label, wherein the quencher is attached to a phosphate moiety that is cleaved off when the nucleotide is enzymatically incorporated into a polynucleotide. The invention further relates to methods of labeling a polynucleotide molecule, as well as methods for identifying one or more residues of a polynucleotide using the dual-labeled nucleotide analogs of the present invention and kits comprising dual-labeled nucleotide analogs according to the invention.