An optical measuring device includes an integrator formed with an incident opening on which excitation light is to be incident and an exit opening from which measurement light is to exit, a light guide unit for guiding the measurement light that exits from the exit opening, and a light detecting unit for detecting the measurement light guided by the light guide unit. The light guide unit includes a plurality of light guide members arranged so that incident end surfaces of the light guide members face the inside of the integrator through the exit opening. The light detecting unit detects the measurement light that is guided by at least one of the plurality of light guide members. Light-receiving regions of the plurality of light guide members on the incident end surface side overlap with each other in the integrator.

A self-clocked photoreceiver device and a method of operating. The self-clocked photoreceiver device includes a light detector connected between a power supply node and a first node, and first to third switching elements. The light detector is configured to detect an incident optical data signal, and to output photocurrent corresponding to a magnitude of the optical data signal through the first node. The first switching element is connected between the first node and a ground node. The second switching element is connected between the power supply node and a second node. The third switching element is connected between the second node and the ground node. The third switching element has a control node connected to the first node.

The invention features devices and methods for collecting and measuring light from external light sources. In general, the devices of the invention feature a light diffusing element, e.g., as a component of a light collector, connected by a light conducting conduit, e.g., a fiber optic cable, to a light measuring device, e.g., a spectrometer. This light diffusing element allows, e.g., for substantially uniform light diffusion across its surface and thus accurate measurements, while permitting the total footprint of the device to remain relatively small and portable. This light diffusing element also allows flexibility in scaling of the device to permit use in a wide range of applications.

A spectrometry device includes: an integrating sphere which includes an inner wall surface and an attachment hole; an adapter which includes a guide hole guiding the measurement target light and is disposed in the integrating sphere; a plate which includes a first surface covering the guide hole from the outside of the integrating sphere and allowing a sample to be mounted thereon and a second surface and through which the measurement target light is transmitted; a holder which includes a concave portion mounting the plate thereon and is attached to the attachment hole; and a spectral detector configured to detect the measurement target light. The concave portion includes a bottom surface facing the second surface and a side surface surrounding the periphery of the plate. The bottom surface and the side surface are coated with a reflective material reflecting the measurement target light.

Optoelectronic devices that use very thin single-crystalline inorganic semiconductor films as phonon-absorbing layers in combination with non-lattice optical cavities are provided.

An optical measuring device includes an integrator formed with an incident opening on which excitation light is to be incident and an exit opening from which measurement light is to exit, a light guide unit for guiding the measurement light that exits from the exit opening, and a light detecting unit for detecting the measurement light guided by the light guide unit. The light guide unit includes a plurality of light guide members arranged so that incident end surfaces of the light guide members face the inside of the integrator through the exit opening. The light detecting unit detects the measurement light that is guided by at least one of the plurality of light guide members. Light-receiving regions of the plurality of light guide members on the incident end surface side overlap with each other in the integrator.

A system, method, and device for evaluating the intensity profile of a laser beam. The laser detection system has a target surface with an interior and an exterior. The target surface and a housing create a target pod with an enclosed interior chamber. A beacon is provided at the target pod to provide for targeting. A camera is provided that images the interior of the target surface from within the enclosed interior chamber. Some percentage of the intensity of the laser beam passes through the target surface uniformly and illuminates the interior of the target surface when the laser beam strikes the target surface. The illumination of and subsequent scattering from the interior of the target surface is imaged by the camera for analysis. By detecting the laser intensity as a function of position, the intensity profile of the laser beam can be quantified.

A self-clocked photoreceiver device and a method of operating. The self-clocked photoreceiver device includes a light detector connected between a power supply node and a first node, and first to third switching elements. The light detector is configured to detect an incident optical data signal, and to output photocurrent corresponding to a magnitude of the optical data signal through the first node. The first switching element is connected between the first node and a ground node. The second switching element is connected between the power supply node and a second node. The third switching element is connected between the second node and the ground node. The third switching element has a control node connected to the first node.

A spectrometry device includes: an integrating sphere which includes an inner wall surface and an attachment hole; an adapter which includes a guide hole guiding the measurement target light and is disposed in the integrating sphere; a plate which includes a first surface covering the guide hole from the outside of the integrating sphere and allowing a sample to be mounted thereon and a second surface and through which the measurement target light is transmitted; a holder which includes a concave portion mounting the plate thereon and is attached to the attachment hole; and a spectral detector configured to detect the measurement target light. The concave portion includes a bottom surface facing the second surface and a side surface surrounding the periphery of the plate. The bottom surface and the side surface are coated with a reflective material reflecting the measurement target light.

A photoreceiver device includes a light detector connected between a power supply node and a first node, and first to third switching elements. The light detector is configured to detect an incident optical data signal, and to output photocurrent corresponding to a magnitude of the optical data signal through the first node. The first switching element is connected between the first node and a ground node. The second switching element is connected between the power supply node and a second node. The third switching element is connected between the second node and the ground node. The third switching element has a control node connected to the first node.