Abstract:
PROBLEM TO BE SOLVED: To provide a surface emitting semiconductor laser device having a monolithically integrated pumping beam source 20, which emits an electcomagnetic radiation having excellent beam quality. SOLUTION: The pumping beam source has an end emitting semiconductor structure 9. The structure is suitable for emitting an electromagnetic radiation based on a curve, which can predetermine an intensity profile in the direction, which crosses the emitting direction z of the semiconductor structure. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor laser, having an improved lateral guide which is suitable for optical pumping of a quantum well structure 7 in the semiconductor laser, provided with a semiconductor substrate 1 having a periodical arrangement of a recess incoming portion 2 or formed by a periodical arrangement of a semiconductor area in the semiconductor substrate. SOLUTION: A beam generated by the semiconductor laser cannot be propagated in the periodical arrangement, and a resonator 3 of the semiconductor laser lacks periodical arrangement in the lateral direction. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a laser apparatus for forming a laser pulse whose pulse duration is in the range of a picosecond or femtosecond. SOLUTION: At least one mode coupler is arranged in the external resonator of the laser apparatus. The mode coupler is arranged as an external mode coupler outside the semiconductor laser, and/or incorporated as an internal mode coupler inside the semiconductor body. Further, it would be advantageous if this takes a two-stage structure that combines, for example, an external mode coupler for initiating mode coupling and an internal mode coupler for reducing a pulse width or stabilizing mode coupling. In a semiconductor laser that is optically pumped by an external resonator, the length of the resonator can be freely selected to advantage from a wide range of choice, thus giving sufficient spatial room to the external mode coupler. The length of the resonator is more advantageously selected within the amplification bandwidth such that a sufficient number of resonator modes are generated for the mode coupling operation. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide laser that can perform an efficient pumping mechanism with only a slight loss. SOLUTION: The wavelength λ p and the incident angle α p of pumping light are specified so that the pumping light may be absorbed primarily inside a quantum well. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract translation:要解决的问题:提供只能轻微损耗的能够执行有效泵送机构的激光器。 解决方案:指定泵浦光的波长λ p SB>和入射角α p SB>,使得泵浦光主要被吸收在量子阱内。 版权所有(C)2004,JPO&NCIPI
Abstract:
A lighting device (100) is specified, comprising - a housing (1) having a light exit surface (2), - a light-emitting semiconductor component (10), and - an optical waveguide (20) having a first end face (21), a second end face (22) situated opposite the first end face (21), and a lateral surface (23) connecting the first and second end faces (21, 22), wherein the first and/or the second end face (21, 22) are/is embodied at least in places as a light entrance surface (24), - the light-emitting semiconductor component (10) and the optical waveguide (20) are arranged within the housing (1), - the light-emitting semiconductor component (10) during operation emits light (5) which largely enters into the optical waveguide (20) through the light entrance surface (24) of the optical waveguide (20), - the light (5) in the optical waveguide (20) at least partly emerges through the lateral surface (23) of the optical waveguide (20), and - the light (5) that has emerged through the lateral surface (23) leaves the housing (1) through the light exit surface (2) of the housing (1).
Abstract:
Disclosed is a surface-emitting semiconductor laser component, especially an electrically pumped semiconductor laser component, which features emission in a vertical direction and is used for generating laser radiation by means of an external optical resonator (4,5). Said semiconductor laser component comprises a semiconductor element with a sequence (2) of semiconductor layers which is provided with a lateral main direction of extension and an active zone (3) used for generating radiation. A radiation-permeable contact layer (6) is disposed within the resonator and is connected to the semiconductor element in an electrically conducting manner.
Abstract:
In at least one embodiment of the surface light guide (1), the surface light guide comprises at least one scattering element (5) for scattering light, wherein a decoupling coefficient is caused by the scattering element (5). The decoupling coefficient is set in a varying fashion along a main light-guiding direction (z). In a direction (L) perpendicular to the main sides (2) of the surface light guide (1), the opacity value is no more than 0.10, the transmission coefficient is at least 0.75 and the quotient of the minimum light density and maximum light density seen over a continuous emitting area (A) of at least one of the main sides (2) is at least 0.75.
Abstract:
A laser light source especially comprises a semiconductor layer sequence (10) having an active layer with at least two active zones (45) that are adapted to emit, when operating, electromagnetic radiation via a lateral face of the semiconductor layer sequence (10) along a direction of emission (90), said lateral face being designed as a radiation output surface (12). The laser light source further comprises an electrical contact surface (30) above every of the at least two active zones (45) on a main surface (14) of the semiconductor layer sequence (10) and a surface structure in the main surface (14) of the semiconductor layer sequence (10). The at least two active zones (45) are arranged in the active layer (40) at a right angle to the direction of emission (90) and interspaced from each other. Every electrical contact surface (30) has a first section (31) and a second section (32) which grows wider along the direction of emission (90) towards the radiation output surface (12). The surface structure between the at least two electrical contact surfaces (30) has at least one first recess (6) along the direction of emission (90) and second recesses (7), every first section (31) of the electrical contact surfaces (30) being arranged between at least two second recesses (7).
Abstract:
A light-emitting diode includes at least one light-emitting diode chip, at least one control device, wherein each of the light-emitting diode chips is electrically connected to one of said at least one control devices, each of said at least one control devices comprises a data storage device in which brightness data for each light- emitting diode chip which is connected to said control device is stored, and the control device drives the connected light-emitting diode chip with a current which is selected according to stored brightness data for said light erniturig-diode chip.
Abstract:
A method for producing a radiation-emitting component (1) is provided. A radiation characteristic in the far field is specified. From the predetermined radiation characteristic a refractive index profile is determined for the radiation-emitting component (1) in a direction extending perpendicular to a primary radiation direction of the component. A design for the component is determined such that the component has the previously determined refractive index profile. The component (1) is configured in accordance to the previously determined design. Furthermore, a radiation-emitting component is provided.