摘要:
A mirror driving mechanism includes a plate-shaped base portion, a mirror that is installed at the base portion, and a temperature detecting section that is installed at the base portion and that detects a temperature of the base portion. The base portion includes a thin portion that is disposed away from an outer edge of the base portion and that has a through hole extending through the base portion in a plate-thickness direction of the base portion, a thick portion that is connected to the thin portion, that is thicker than the thin portion in the plate-thickness direction of the base portion, and that extends along the outer edge so as to surround the thin portion, and a first shaft portion extends into the through hole from an outer periphery of the through hole.
摘要:
A method for producing a semiconductor element includes a step of forming a multiple quantum well in which a GaSb layer and an InAs layer are alternately stacked on a GaSb substrate by MOVPE, wherein, in the step of forming a multiple quantum well, an InSb film is formed on at least one of a lower-surface side and an upper-surface side of the InAs layer so as to be in contact with the InAs layer.
摘要:
A semiconductor device includes: a semiconductor substrate made of a hexagonal Group III nitride semiconductor and having a semi-polar plane; and an epitaxial layer formed on the semi-polar plane of the semiconductor substrate and including a first cladding layer of a first conductive type, a second cladding layer of a second conductive type, and a light-emitting layer formed between the first cladding layer and the second cladding layer, the first cladding layer being made of Inx1Aly1Ga1-x1-y1N, where x1>0 and y1>0, the second cladding layer being made of Inx2Aly2Ga1-x2-y2N, where0≦x2≦about 0.02 and about 0.03≦y2≦about 0.07.
摘要翻译:半导体器件包括:由六方晶III族氮化物半导体制成并具有半极性平面的半导体衬底; 以及形成在半导体衬底的半极性平面上的外延层,包括第一导电类型的第一包层,第二导电类型的第二包层和形成在第一包层和第二包层之间的发光层 第二包层由In x Al 1 Ga 1-x1-y 1 N制成,其中x1> 0和y1> 0,第二包层由Inx2Aly2Ga1-x2-y2N制成,其中0≦̸ x2≦̸约0.02和约0.03& ; y2≦̸约0.07。
摘要:
In a group III nitride semiconductor device according to one aspect of the present invention, in a p-type group III nitride semiconductor region formed on a semi-polar plane substrate, the concentration of hydrogen (H) contained in the p-type group III nitride semiconductor region is 25% or less of the concentration of a p-type dopant therein, and the concentration of oxygen contained in the p-type group III nitride semiconductor region is 5×1017 atoms/cm3 or lower, and an angle between a normal axis of a primary surface of the semi-polar plane substrate and a c-axis of the semi-polar plane substrate is not lower than 45 degrees and not higher than 80 degrees or not lower than 100 degrees and not higher than 135 degrees in a waveguide axis direction of the group III nitride semiconductor device.
摘要翻译:在根据本发明的一个方面的III族氮化物半导体器件中,在形成在半极性平面衬底上的p型III族氮化物半导体区域中,p型III族中所含的氢(H)浓度 氮化物半导体区域的p型掺杂剂的浓度为25%以下,p型III族氮化物半导体区域中所含的氧浓度为5×10 17原子/ cm 3以下, 半极性平面基板的主表面的法线轴和半极性平面基板的c轴不小于45度且不高于80度或不低于100度并且不高于135度 III族氮化物半导体器件的波导轴方向。
摘要:
An optical module 1 according to an embodiment includes a plurality of laser diodes (LDs) 21 to 23, a multiplexing optical system 30 combining a plurality of laser beams from the respective plurality of LDs, and a package 10 accommodating the plurality of LDs and the multiplexing optical system. The package includes a support mounted with the multiplexing optical system, and a cap having a transmissive window that allows a resultant light beam to pass through. At least one of the LDs has an oscillation wavelength of nor more than 550 nm. The package has an internal moisture content of not more than 3000 ppm. The multiplexing optical system is fixed to the support by a resin curing adhesive.
摘要:
A semiconductor stack includes a first-conductivity-type layer of a first conductivity type, the first-conductivity-type layer being formed of a III-V compound semiconductor; a quantum well light-receiving layer formed of a III-V compound semiconductor; and a second-conductivity-type layer of a second conductivity type different from the first conductivity type, the second-conductivity-type layer being formed of a III-V compound semiconductor. The first-conductivity-type layer, the quantum well light-receiving layer, and the second-conductivity-type layer are stacked in this order. The quantum well light-receiving layer has a thickness of 0.5 μm or more. The quantum well light-receiving layer has a carrier concentration of 1×1016 cm−3 or less.
摘要:
An optical module includes a transmitting member. The transmitting member is fixed to a cap member so as to cover a through-hole. On the assumption that the height of one point on a first surface in a state in which the transmitting member is detached from the cap member is zero and the direction toward the outside of the optical module is a positive direction, the amount of warp that is a difference between the displacement at the central point and the displacement at a standard point, on the first surface, corresponding to a reference point, on the projection image, away from a center of gravity by a particular distance is different between a first geodesic line and a second geodesic line, the displacement being a height of the one point in a direction of the optical axis in a state in which the transmitting member is fixed to the cap member. The transmitting member is joined to the cap member at the first surface or the second surface.
摘要:
A semiconductor layered structure includes a substrate formed of a III-V compound semiconductor, a buffer layer disposed on and in contact with the substrate and formed of a III-V compound semiconductor, and a quantum well layer disposed on and in contact with the buffer layer and including a plurality of component layers formed of III-V compound semiconductors. The substrate has a diameter of 55 mm or more. At least one of the component layers is formed of a mixed crystal of three or more elements. When the compound semiconductor forming the substrate has a lattice constant d1, the compound semiconductor forming the buffer layer has a lattice constant d2, and the compound semiconductors forming the quantum well layer have an average lattice constant d3, (d2−d1)/d1 is −3×10−3 or more and 3×10−3 or less, and (d3−d1)/d1 is −3×10−3 or more and 3×10−3 or less.
摘要:
An infrared photodiode that is a semiconductor device includes a substrate, a buffer layer formed of GaSb, and an absorption layer including a multiple quantum well structure. The multiple quantum well structure includes a stack of unit structures each including a plurality of component layers. Each unit structure includes a first component layer formed of InAs1-aSba where the ratio a is 0 or more and 0.05 or less, a second component layer formed of GaSb, and a third component layer formed of InSbxAs1-x where the ratio x is more than 0 and less than 1. The third component layer is disposed so as to be in contact with one main surface of the second component layer. The other main surface of the second component layer is in contact with the first component layer within the unit structure. The third component layer has a thickness of 0.1 nm or more and 0.9 nm or less.
摘要翻译:作为半导体器件的红外光电二极管包括衬底,由GaSb形成的缓冲层和包括多量子阱结构的吸收层。 多量子阱结构包括每个包括多个部件层的单元结构的堆叠。 每个单位结构包括由InAs1-aSba形成的第一组分层,其中a为0以上且0.05以下,由GaSb形成的第2成分层和由In x Sb x As 1-x形成的第3成分层, 大于0且小于1.第三组分层设置成与第二组分层的一个主表面接触。 第二组分层的另一个主表面与单元结构内的第一组分层接触。 第三成分层的厚度为0.1nm以上且0.9nm以下。
摘要:
An optical module includes a transmitting member. The transmitting member is fixed to a cap member so as to cover a through-hole. On the assumption that the height of one point on a first surface in a state in which the transmitting member is detached from the cap member is zero and the direction toward the outside of the optical module is a positive direction, the amount of warp that is a difference between the displacement at the central point and the displacement at a standard point, on the first surface, corresponding to a reference point, on the projection image, away from a center of gravity by a particular distance is different between a first geodesic line and a second geodesic line, the displacement being a height of the one point in a direction of the optical axis in a state in which the transmitting member is fixed to the cap member. The transmitting member is joined to the cap member at the first surface or the second surface.