At least one of the electrodes of a discharge lamp, including at an interior of a main body of the electrode: a heat-transmitting substance of the melting point lower than that of a material which makes up the main body; and a regulating body that is made up of a material of the melting point higher than that of the heat-transmitting substance, that includes a blade which extends in the axial direction and in a radial direction perpendicular to the axial direction, and that regulates convection of the heat-transmitting substance. Surface roughness Rz of at least one of a region which is on an inner wall face of the main body and with which the regulating body makes contact and a region which is on a surface of the regulating body and with which the inner wall face makes contact is not greater than 1.52 μm.

A light emitting unit includes a light emitting sealed body and a voltage application circuit. The light emitting sealed body includes a container to which laser light for maintaining plasma is incident and from which light from the plasma is emitted, a first electrode which includes a first discharge portion, and a second electrode which includes a second discharge portion. An end portion of the first discharge portion has a shape in which a thickness is thinned as it goes toward the second discharge portion and an end surface of the second discharge portion extends along a plane perpendicular to an extending direction of the first discharge portion. The voltage application circuit controls a potential difference between the first electrode and the second electrode by adjusting a voltage applied to at least the first electrode.

Systems and methods for reducing contamination of one or more arc lamps are provided. One example implementation is directed to a millisecond anneal system. The millisecond anneal system includes a processing chamber for thermally treating a substrate using a millisecond anneal process. The system further includes one or more arc lamps. Each of the one or more arc lamps is coupled to a water loop for circulating water through the arc lamp during operation of the arc lamp. The system includes a reagent injection source configured to introduce a reagent, such as nitrogen gas, into water circulating through the arc lamp during operation of the arc lamp.

The invention relates to an electrode for a discharge lamp, wherein the electrode has a base body having an electrode plateau providing an end face of the electrode, wherein the base body is delimited by the electrode plateau in a longitudinal extension direction of the electrode. Furthermore, the electrode has a coating, arranged in at least a first region of the base body that is different from the electrode plateau, to increase an emission of heat. In addition, the electrode has an at least partially contiguous free region of the base body extending at least partly in the longitudinal extension direction as far as the electrode plateau, in which the coating for increasing the emission of heat is not arranged, and wherein the first region adjoins at least one section of the free region in the circumferential direction of the electrode.

Systems and methods for reducing contamination of one or more arc lamps are provided. One example implementation is directed to a millisecond anneal system. The millisecond anneal system includes a processing chamber for thermally treating a substrate using a millisecond anneal process. The system further includes one or more arc lamps. Each of the one or more arc lamps is coupled to a water loop for circulating water through the arc lamp during operation of the arc lamp. The system includes a reagent injection source configured to introduce a reagent, such as nitrogen gas, into water circulating through the arc lamp during operation of the arc lamp.

The present disclosure relates to the technical field of electric light sources, particularly to a metal halide lamp and a manufacturing method thereof. The metal halide lamp includes an electric arc tube, an inner glass bulb, and a lamp holder fixedly connected with the inner glass bulb; the electric arc tube includes a tube body, a positive electrode located inside an electric arc cavity of the tube body and connected with a positive feedthrough inserted in a first leg portion of the tube body, and a negative electrode connected with a negative feedthrough inserted in a second leg portion of the tube body; the electric arc cavity is provided therein with an ignition gas; an outer surface of the first leg portion is provided with a conductive layer and a metal electrical connector, wherein the conductive layer has one end close to and the other end away from an electrode tip of the positive electrode, the metal electrical connector has one end connected with the other end of the conductive layer, and the other end connected with a long molybdenum rod. Security risks in manufacturing, transportation, mounting, utilization, storage, and waste disposal brought about by use of the radioactive material .sup.85Kr are avoided in the present disclosure.

The present disclosure relates to the technical field of electric light sources, particularly to a metal halide lamp and a manufacturing method thereof. The metal halide lamp includes an electric arc tube, an inner glass bulb, and a lamp holder fixedly connected with the inner glass bulb; the electric arc tube includes a tube body, a positive electrode located inside an electric arc cavity of the tube body and connected with a positive feedthrough inserted in a first leg portion of the tube body, and a negative electrode connected with a negative feedthrough inserted in a second leg portion of the tube body; the electric arc cavity is provided therein with an ignition gas; an outer surface of the first leg portion is provided with a conductive layer and a metal electrical connector, wherein the conductive layer has one end close to and the other end away from an electrode tip of the positive electrode, the metal electrical connector has one end connected with the other end of the conductive layer, and the other end connected with a long molybdenum rod. Security risks in manufacturing, transportation, mounting, utilization, storage, and waste disposal brought about by use of the radioactive material .sup.85Kr are avoided in the present disclosure.

An electrode module includes an electrode and a core wire inserted into a core wire insertion hole of the electrode. When inserting the core wire into the core wire insertion hole of the electrode, the core wire can be inserted smoothly, thereby avoiding occurrence of chipping or cracking in the core wire insertion hole. A low-friction layer is provided on the inner surface of the core wire insertion hole of the electrode and/or the outer periphery of the inserted portion of the core wire.

A laser-sustained plasma light source includes a plasma lamp configured to contain a volume of gas and receive illumination from a pump laser in order to generate a plasma. The plasma lamp includes one or more transparent portions transparent to illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The one or more transparent portions are formed from a transparent material having elevated hydroxide content above 700 ppm.

The xenon lamp for a projector, the xenon lamp comprises a light-emitting tube and an anode and a cathode that are arranged inside the light-emitting tube so as to face each other through a gap in a first direction, the anode including: a body part and a chip part whose cross-sectional area cut along a first plane orthogonal to the first direction is smaller than the cross-sectional area of the body part, the chip part including: a first part joined to the body part, the first part protruding toward the cathode and having a tapered shape; and a second part joined to the first part, the second part protruding toward the cathode and having a shape such that an angle of inclination of an outer profile of the second part differs from an angle of inclination of an outer profile of the first part.