摘要:
A semiconductor laser device producing light having a TE-polarized component suitable for practical use (i.e., light having TE-polarized light intensity sufficiently high for practical use). A semiconductor laser device includes a GaAsP active layer, InGaP guide layers, and AlGaInP cladding layers. The GaAsP active layer emits light. The GaAsP active layer is interposed between the InGaP guide layers. The InGaP guide layers and GaAsP active layer are interposed between the AlGaInP cladding layers. Polarization ratio, which is a ratio of light intensity of TM-polarized light to light intensity of TE-polarized light, of the light produced by the semiconductor laser device is less than 2.3.
摘要:
A semiconductor optical element having a includes an n-type GaAs buffer layer, an n-type AlGaInP cladding layer, a first InGaAsP (including zero As content)guide layer without added dopant impurities, an InGaAsP (including zero In content) active layer, a second InGaAsP (including zero As content)guide layer without added dopant impurities, a p-type AlGaInP cladding layer, a p-type band discontinuity reduction layer, and a p-type GaAs contact layer sequentially laminated on an n-type GaAs substrate C or Mg is the dopant impurity in the p-type GaAs contact layer, the p-type band discontinuity reduction layer, and the p-type AlGaInP cladding layer.
摘要:
A semiconductor optical element having a includes an n-type GaAs buffer layer, an n-type AlGaInP cladding layer, a first InGaAsP (including zero As content) guide layer without added dopant impurities, an InGaAsP (including zero In content) active layer, a second InGaAsP (including zero As content) guide layer without added dopant impurities, a p-type AlGaInP cladding layer, a p-type band discontinuity reduction layer, and a p-type GaAs contact layer sequentially laminated on an n-type GaAs substrate C or Mg is the dopant impurity in the p-type-GaAs contact layer, the p-type band discontinuity reduction layer, and the p-type AlGaInP cladding layer.
摘要:
A semiconductor laser device producing light having a TE-polarized component suitable for practical use. A semiconductor laser device includes a GaAsP active layer, InGaP guide layers, and, AlGaInP cladding layers. The GaAsP active layer emits light. The GaAsP active layer is interposed between the InGaP guide layers. The InGaP guide layers and the GaAsP active layer are interposed between the AlGaInP cladding layers. Polarization ratio, which is a ratio of light intensity of TM-polarized light to light intensity of TE-polarized light, is less than 2.3.
摘要:
A semiconductor laser array device for outputting a higher power includes: a plurality of semiconductor laser chips, arranged in a predetermined pitch; a submount for mounting each semiconductor laser chip; and a heat sink for dissipating heat from the semiconductor laser chip through the submount; wherein a distance S between the centers of the chips and a thickness T of the submount satisfy the following inequality: 2×T≦S≦10×T, whereby improving efficiency of heat dissipation with a good process yield.
摘要翻译:用于输出更高功率的半导体激光器阵列器件包括:以预定间距排列的多个半导体激光器芯片; 用于安装每个半导体激光器芯片的基座; 以及用于通过所述底座从所述半导体激光器芯片散热的散热器; 其中芯片的中心和底座的厚度T之间的距离S满足以下不等式:2xT <= S <= 10×T,从而以良好的加工效率提高散热效率。
摘要:
A tube pump comprises a rotor configured to have a roller and to hold the roller to be able to make an orbital motion along the inner circumferential surface of the cap. The rotor includes a disk part which holds the roller on a base side, and a tube press member that engages with the disk part so that the tube does not move to the base side with respect to the disk part, seals a gap formed with respect to the inner circumferential surface of the cap, and is capable of rotating along an outer circumferential part of the disk part is provided at the outer circumferential part of the disk part.
摘要:
Breathing apparatus comprising a face piece for covering the whole face of a user and a fan unit for operating synchronously with the breath timing of the user. The breathing apparatus comprises a breath monitoring apparatus provided with a diaphragm and a sensor for detecting movement of the diaphragm. The location of the diaphragm and the sensor and a transmission path of inhale pressure and exhale pressure to the diaphragm are optimized. The breath monitoring apparatus is disposed in a fan unit, a space for accommodating the diaphragm and the sensor is disposed independently of an air passage in the fan unit, and the internal space of a nose cup is communicated with the space in the fan unit through holes formed in the nose cup and the face piece when the fan unit and the nose cup are connected to the face piece.
摘要:
An image processing apparatus includes a correcting unit that performs enlarging or reducing correction on an image to be processed by determining an arrangement of pixels that are to be added to or deleted from gradational image data of the image to be processed based on an angle at which the pixels are to be arranged with respect to a horizontal direction of the image to be processed or with respect to a vertical direction of the image to be processed, and a pixel array control unit that changes the angle at which the pixels are arranged based on a test image of the image data to be processed after being corrected by the correcting unit.
摘要:
Provided is a mask with a nosal cushion, the mask consisting of a filter that filters dust, wherein, the edges of the filter are folded back to create flaps that follow the depressions on both sides of the nosal region. A sponge of urethane foam or the like is affixed inside the flaps, thereby improving the fit of the mask by conforming the mask to the contours of the nosal region, resulting in a mask cushion with a nosal cushion that has cushioning properties and strong protective capabilities.
摘要:
A light-amount control apparatus for controlling an output light amount of light sources used for optical writing is disclosed. The apparatus includes one or more drive units for supplying a drive current to the light source; one or more drive-current setting units for determining an amount of the drive current provided to the light source from the drive unit; a light-amount detecting unit for detecting an output light from the light source; and outputting a voltage according to the detected light amount; and a processing unit for setting the drive current amount based on the detected value detected with the light-amount detecting unit.