Abstract:
An optical waveform measuring device, comprising an optical amplifier for amplifying a light beam under measurement and a photodetector to which a light beam amplified by the optical amplifier is applied.
Abstract:
A target apparatus for detecting laser radiation, or the like, impinging thereon. The target has a support having a plurality of fiber optic fibers mounted thereon with their ends attached to a radiation detector and amplifier. A radiation scattering cover covers the fiber optic fibers on at least one side to scatter radiation impinging thereupon adjacent the fibers, thereby changing the angle of light entering the fibers to produce a signal on the detector to indicate a beam of radiation hitting the target.
Abstract:
A method and apparatus for improving the safety of a surgical procedure involving delivery of laser energy to a tissue, involves enhancing or increasing the detectability of radiation emitted by the tissue or any portion of a surgical instrument or device by providing a sacrificial material that absorbs radiation emitted during the surgical procedure, increasing the temperature of a surface on which the material is disposed and/or causing damage radiation to be emitted in a way that can be detected by monitoring the temperature of the surface and/or radiation, including infrared and/or visible light, emitted by the surface. In a preferred embodiment of the invention, the radiation absorbing material is a sheath arranged to surround the fiber.
Abstract:
The receiving device (1) for laser radiation provided with a detector (6) is characterized by a structure (2, 4) similar to a light guide and arranged before the detector (6). The light guide may be flexible so that it is possible to determine the incidence direction of the laser beam (3) from differential transit times of signals to arrive to both extremities of the light guide (2, 4). The latter may be provided inside or at the surface of diffusion centers.
Abstract:
A target apparatus for detecting laser radiation, or the like, impinging thereon. The target has a support (28) having a plurality of fiber optic fibers (27) mounted thereon with their ends attached to a radiation detector and amplifier (30). A radiation scattering cover (14, 31, 36) covers the fiber optic fibers on at least one side to scatter radiation impinging thereupon adjacent the fibers, thereby changing the angle of light entering the fibers to produce a signal on the detector to indicate a beam of radiation hitting the target.