Portable laser head

A portable laser head comprising;

• a holder provided with a plurality of spaced-apart nests;
• a non-linear frequency converter mounted in one of the nests and operative to convert an input light in a first frequency band to an output light in the first frequency band and in a second frequency band different from the first frequency band;
• a beam splitter received in a respective one of the nests downstream from the frequency converter along a first light path, the beam splitter being configured to transmit the light in the second frequency band along the first light path and reflect the light in the first frequency band along a second light path different from the first path;
• a mirror received in a respective one of the nests and located downstream from the beam splitter along the second light path, the mirror being configured to receive the reflected light in the first frequency band from the beam splitter;
• and
• a dump reflector mounted to a respective one of the nests of the holder downstream from the mirror along the second path and aligned with the mirror so as to guide the reflected light in the first frequency band along the second light path outside the laser head.

A kit comprising:

• an elongated laser head having a longitudinal axis and provided with:
• an input collimator unit provided with concentrically arranged outer fiber jacket and an inner ferrule, which is configured to hold an input fiber, and a collimator lens spaced axially from the fiber jacket and operative to focus an input light coupled to the input fiber along a transmission light path,
• an output unit downstream from and coupled to the input collimator unit, the output unit being having a one-piece holder receiving a frequency converter and beam splitter aligned with the collimator lens, a mirror extending angularly from and spatially fixed to the beam splitter, and a dump collimator assembly aligned with the mirror, and
• a housing receiving the input collimator and output units and having an interior with a seat for supporting a distal end of the fiber jacket of the input collimator unit;
• and
• an alignment tool removably coupled to the housing and operative to displace the inner ferrule and the collimator lens relative to one another along X-Y-Z axes to a desired position between the ferrule and collimator lens, the alignment tool comprising:
• a shaft provided with an inner thread meshing with an outer thread on the ferrule jacket for displacing the inner ferrule relative the collimator lens along the Z-axis, and
• a case surrounding the shaft and coupled thereto so that the ferrule jacket pivots within the seat of the housing along the X-Y axes.