摘要:
A hybrid external cavity laser and a method for configuring the laser having a stabilized wavelength is disclosed. The laser comprises a semiconductor gain section and a volume Bragg grating, wherein a laser emission from the semiconductor gain section is based on a combination of a reflectivity of a front facet of the semiconductor gain section and a reflectivity of the volume Bragg grating and the reflectivity of the semiconductor gain section and the volume Bragg grating are insufficient by themselves to support the laser emission. The hybrid cavity laser further comprises an etalon that provides further wavelength stability.
摘要:
A method of stabilizing nutritional drinks, and the stabilized drink, including the steps of forming edible oil microparticles, dissolving polyphenol concentrate in a liquid, and associating the polyphenol from the concentrate with the microparticles in the liquid to prevent free radicals from reaching the surface of the microparticles.
摘要:
An electronic device performs active biological operations such as, for example, the analysis of a solution containing charged biological materials. The device can take the form of a flow cell that includes an inlet chamber and an outlet chamber connected to a flow cell chamber. An array containing a plurality of electrodes is contained within the flow cell chamber. Inlet and outlet ports are provided in the inlet chamber and outlet chamber, respectively. The inlet and outlet chambers advantageously have substantially constant cross-sectional flow areas.
摘要:
A multilayer, laminated device for performing fluidic operations includes a first exterior support layer, an adjacent layer disposed in laminated relationship with a portion of the exterior support layer, a second exterior support layer disposed in laminated relationship with a portion of the adjacent layer, and a fluidic pump that is disposed in the adjacent layer. The fluidic pump includes a first gear rotationally mounted to the adjacent layer, the first gear having a magnet contained therein. A second gear is rotationally mounted to the adjacent layer, the second gear having a magnet contained therein, the second gear being engaged with the first gear in a meshed relationship.
摘要:
Methods of manufacture and devices for performing active biological operations utilize various structures to advantageously collect and provide charged biological materials to an array of microlocations. In one embodiment, a device includes focusing electrodes to aid in the direction and transport of materials from a collection electrode to an array. Preferably, one or more intermediate transportation electrodes are utilized, most preferably of monotonically decreasing size between the collection electrode and the array, so as to reduce current density mismatches. In another aspect, a flow cell is utilized over devices to provide containment of solution containing materials to be analyzed. Preferably, the volume of the flow cell is more advantageously interrogated through use of relatively large collection and return electrodes, such as where the area of those electrodes relative to the footprint of the flowcell is at least 40%. In yet another embodiment, a first collection electrode is disposed adjacent an array, with a second collection electrode disposed on the at least an opposite portion of the array. Preferably, the combined area of the collection electrodes is a substantial fraction, preferably at least 50% of the area of the footprint of the flow cell. In yet another embodiment, a concentric ring design is provided. Various flip-chip embodiments are disclosed. A preferred embodiment utilizes a relatively small number of components, for example, five components, for a flip-chip device. A first substrate includes a via, through which solution flows to the underlying analytical chip, which a sealant between the chip and the first substrate. An overlying flow cell contains the solution. Novel manufacturing techniques are provided for utilizing the via as a shadow mask to constrain the flow of the sealant. A multiple site array system includes a row select and column select, which are preferably memory, and most preferably shift register memory. An improved current output circuit is of the current mirror type and serves to output selected current based upon input from the column select and row select.
摘要:
A surface emitting light emitting device with a semiconducting substrate, a semiconducting mirror stack positioned on the substrate surface, a spacer layer positioned on the mirror stack, an active region positioned on the spacer layer, a second spacer layer positioned on the active region, a second semiconducting mirror stack positioned on the second spacer layer, and a top contact layer positioned in contact with the second semiconducting mirror stack. The active region includes multiple quantum wells each having a different transition wavelength and positioned on the spacer layer with the quantum well possessing the longest transition wavelength located closest to the spacer layer and additional quantum wells of the multiple quantum wells positioned in order of decreasing transition wavelength so that the sum of the emission from all of the quantum wells results in a broad and uniform output emission spectrum.
摘要:
An article and method for manufacturing an optical reading head (400,500) including an optically transparent substrate (100) with a first surface (103) and a second surface (116), wherein the first surface (103) and the second surface (116) are .joined at an angle. Depositing a plurality of layers having an upper portion (114), a middle portion 111, 112, 113), and a lower portion (101) that are optically active on the first and second surfaces (103, 116) of the optically transparent substrate (100). Forming light emitting devices (406, 407) in the plurality of layers on the second surface (116), thereby generating light emitting devices (406, 407) on the angle in the plurality of layers on the second surface (116). Positioning a detection device (402) in a normal plane to the first surface (103).
摘要:
An article and method for manufacturing an optical reading head (400,500) including an optically transparent substrate (100) with a first surface (103) and a second surface (116), wherein the first surface (103) and the second surface (116) are joined at an angle. Depositing a plurality of layers having an upper portion (114), a middle portion (111, 112, 113), and a lower portion (101) that are optically active on the first and second surfaces (103, 116) of the optically transparent substrate (100). Forming light emitting devices (406, 407) in the plurality of layers on the second surface (116), thereby generating light emitting devices (406, 407) on the angle in the plurality of layers of the second surface (116). Positioning a detection device (402) in a normal plane to the first surface (103).
摘要:
A VCSEL including a first mirror stack, an active region and a second mirror stack positioned on a substrate having a surface lying in a first plane and a centrally located offset area of the surface lying in a second plane parallel to the first plane and spaced therefrom. Portions of the active region and the first and second mirror stacks being offset from surrounding portions by the offset area in the surface of the substrate so as to define a lateral waveguide which confines the operating region of the VCSEL.
摘要:
A thin transition layer (13) is employed to provide alignment between an electron wave function (29) and a hole wave function (37) of an optical modulator (10) for a wide range of applied voltage values that are less than a predetermined value. Over this range of voltages, the modulator (10) is in an off state and substantially absorbs incident light (19). For applied voltages in excess of the predetermined value, the electron (29) and hole wave (37) function alignment is diminished thereby allowing light (19) to be transmitted through the modulator (10).