Abstract: A laser transmitter is disclosed in which the laser combines the outputs of numerous laser diodes using dichroic combination to produce a high power, diffraction limited beam which may be transmitted at minimum beam divergence using the full aperture of the transmitter telescope. The individual diode beams are combined and superimposed in the laser, and are transmitted superimposed in the near and far field of the transmitter telescope. The dichroic combining process is as follows. A collimate beam of a first wavelength is directed at a narrowband or long wave pass filter which is tilted slightly (about 10 degrees). This beam passes through the filter. A beam of a second wavelength is directed toward the exit side of the filter (which acts as a mirror) at such an angle that the second beam is reflected colinear with the first beam and superimposed on it. This process of superimposing the laser beams continues as each laser beam from the laser diodes is added to form a combined laser beam.

Abstract: Optoelectrical coupling arrangement composed of a carrier element having a side face and provided with at least one trough-shaped recess extending to the side face, at least one beam waveguide element fastened in the recess and presenting an end face positioned to lie in the region of the one side face of the carrier element, and at least one photodetector fastened to the side face and having a light-sensitive region positioned to receive a substantial portion of the light emanating from the end face of the beam waveguide element. The carrier element comprises at least one electrical conductive path connected electrically to the photodetector.