The exit beam converges onto a photodetector.

In other terms, the output beam is telecentric.

The output beam is collimated in the region of the out put mirrors (2, 3).

In some embodiments, the second non-linear crystal interacts with the first output beam and an infrared beam from another laser device to produce the second output beam.

In this way, the point source has one contribution extinguished in the output beam.

The isolator is to also receive a second input beam of light on the second grating and output a polarized second output beam of light through the first grating with the second output beam offset from the second input beam.

An output beam directing apparatus is coupled to the processor and directs the output beam to the substrate and form the interconnections.

A portion of the laser output beam is diffracted by the acousto-optic cell at four different angles to the laser output beam.

An output beam is generated, which may be polarized.

A polarization combiner combines light from the first and second beam paths to form an output beam, wherein the output beam has a second aspect ratio of etendue R2 not equal to R1.

The output section combines the desired beamlets so as to form the output beam.

In some such embodiments, the second non-linear crystal converts the wavelength of the first output beam to produce the second output beam.

The electromagnetic radiation is then converged into an exit beam.

The first polarizing beam splitter (130) recombines the return reference beam (156) and the return measurement beam (152) to form an output beam (190).

For one embodiment, a laser generates a reference beam (26) and an output beam (27).