A laser light source apparatus comprising: a laser diode; a first optical assembly comprising one or more lenses (52, 53, 54, 55) for generating a collimated laser beam from light emitted by the laser diode; a doped microstructured glass block configured to generate laser emissions (404, 405, 406, 407) at at least a first wavelength and a second wavelength when pumped by the collimated laser beam; an input beam lens for focusing the collimated laser beam onto an input surface of the microstructured glass block; an optical alignment assembly comprising: a laser diode housing for mounting and aligning the laser diode and the first optical assembly; and a microstructured glass block mounting (57, 58) configured to mount and align the input beam lens and the microstructured glass block; an output light guiding assembly comprising at least one lens for collimating output light from an output surface of microstructured glass block into an output beam; and a housing for containing and supporting the optical alignment assembly and the output light guiding assembly, wherein the laser diode housing is configured to dissipate heat from the laser diode and is constructed of a material that is thermally stable and has high thermal conductivity to maintain laser diode output within a predetermined acceptable output range, and the microstructured glass block comprises at least one microstructured waveguide that when pumped by the input beam generates multiple narrow band light emissions (404, 405, 406, 407) of different wavelengths. a laser diode; a first optical assembly comprising one or more lenses (52, 53, 54, 55) for generating a collimated laser beam from light emitted by the laser diode; a doped microstructured glass block configured to generate laser emissions (404, 405, 406, 407) at at least a first wavelength and a second wavelength when pumped by the collimated laser beam; an input beam lens for focusing the collimated laser beam onto an input surface of the microstructured glass block; an optical alignment assembly comprising: a laser diode housing for mounting and aligning the laser diode and the first optical assembly; and a microstructured glass block mounting (57, 58) configured to mount and align the input beam lens and the microstructured glass block; an output light guiding assembly comprising at least one lens for collimating output light from an output surface of microstructured glass block into an output beam; and a housing for containing and supporting the optical alignment assembly and the output light guiding assembly, wherein the laser diode housing is configured to dissipate heat from the laser diode and is constructed of a material that is thermally stable and has high thermal conductivity to maintain laser diode output within a predetermined acceptable output range, and the microstructured glass block comprises at least one microstructured waveguide that when pumped by the input beam generates multiple narrow band light emissions (404, 405, 406, 407) of different wavelengths. a laser diode housing for mounting and aligning the laser diode and the first optical assembly; and a microstructured glass block mounting (57, 58) configured to mount and align the input beam lens and the microstructured glass block; an output light guiding assembly comprising at least one lens for collimating output light from an output surface of microstructured glass block into an output beam; and a housing for containing and supporting the optical alignment assembly and the output light guiding assembly, wherein the laser diode housing is configured to dissipate heat from the laser diode and is constructed of a material that is thermally stable and has high thermal conductivity to maintain laser diode output within a predetermined acceptable output range, and the microstructured glass block comprises at least one microstructured waveguide that when pumped by the input beam generates multiple narrow band light emissions (404, 405, 406, 407) of different wavelengths.