US Patent 6879604 Waveguide laser devices

A continuous wave laser device (40) comprises a convoluted path or fiber (43) of Raman laser material that has been micromachined on to a substrate, the laser material fiber being covered by protective cladding (30). A 1 cm diameter substrate can have tens of meters of fiber fabricated on it and with a suitable choice for the laser material, e.g. Diamond, can output tens of hundreds of Watts of laser power. One possible use envisaged is as multicolor laser diodes, for example for projection television systems.