Abstract: A process for manufacturing a laser diode package including a laser diode, a heat sink and a lid. The laser diode has an emitting surface, a reflective surface opposing the emitting surface, and first and second surfaces between the emitting surface and the reflective surface. The laser diode has a diode height defined between the emitting surface and the reflective surface. The heat sink has an interior surface, an exterior surface opposing the interior surface, a top surface and a base surface. The height of the heat sink is defined between the top surface and the base surface and is approximately less than four times the laser diode height. The first surface of the diode is attached to the interior surface of the heat sink with a first solder. The base surface of the heat sink is coupled to a thermal reservoir. The lid is attached to the second surface of the laser diode via a second solder. An upper end of the lid is near the emitting surface of the laser diode.

Abstract: A laser diode package includes a laser diode, a heat sink and a lid. The laser diode has an emitting surface, a reflective surface opposing the emitting surface, and first and second surfaces between the emitting surface and the reflective surface. The laser diode has a diode height defined between the emitting surface and the reflective surface. The heat sink has an interior surface, an exterior surface opposing the interior surface, a top surface and a base surface. The height of the heat sink is defined between the top surface and the base surface and is approximately less than four times the laser diode height. The first surface of the diode is attached to the interior surface of the heat sink with a first solder. The base surface of the heat sink is coupled to a thermal reservoir. The lid is attached to the second surface of the laser diode via a second solder. An upper end of the lid is near the emitting surface of the laser diode.

Abstract: A needle threading device consisting of a pair of thin, substantially rigid blades joined at one end and spaced apart in a normal position at the other. The blades at the open end are insertable through the eye of a needle to receive the thread or yarn and can then be "pinced" and held together with one hand and the yarn pulled through the needle as the device is withdrawn and the needle is held. In other embodiments the device consists of a pair of oppositely extending blades of different widths for various sewing or needlecraft operations. In still another embodiment, a plurality of pairs of blades of different sizes are pivotally joined to a shaft and the desired blade can be pivoted to a position of use.

Abstract: A laser diode is soldered between metal plates for intimate thermal and electrical contact. The plates are prefabricated and are provided with an insulative spacer therebetween. The two metal plates are held together in a preferred orientation by the spacer which is firmly adhered and sealed to the two plates during the diode soldering operation. The metal plates are constructed from material thin enough that they yield under thermal pressure of the diode to eliminate mechanical strain on the diode during thermal cycling. Backup plates are provided in contact with the diode mounting plates to feed electrical energy thereto.

Abstract: High power operation in conjunction with excellent mode stability is rendered possible by a unique configuration comprising the use of two injection laser diode sections in a crossed-junction configuration.

Abstract: A laser diode is soldered between metal plates for intimate thermal and electrical contact. The plates are prefabricated and are provided with an insulated spacer therebetween. The two metal plates are held together in a preferred orientation by the spacer which is firmly adhered and sealed to the two plates during the diode soldering operation. The laser diodes so mounted can be tested in this configuration and after testing are formed into an array by stacking the laser diode subassemblies providing spacer elements therebetween and series contacts from one end to the other of the array so that an array of laser diodes with matched characteristics can be constructed in a line which may not be in alignment with the total package to provide an intense light output at a predetermined wavelength.

Abstract: A laser diode suitable for integrated and fiber optic applications requiring single transverse and single longitudinal mode operation. The single transverse mode is provided by making a gallium arsenide double heterostructural laser diode with a narrow stripe width and a relatively long length. The single longitudinal mode operation is provided by cracking the diode transverse to the stripe at one or more locations to form internal etalons in the laser cavity.

Abstract: An electrooptic crystal having improved characteristics including an improved light extinction ratio and a process of making same including etching certain portions of the lateral surfaces thereof so as to relieve surface and other strain in the crystal.