A high power light source having an array, bundle or separate plurality of
laser diodes coupled to a same number of multimode waveguides to collect
beams of light emitted from the of laser diodes is provided. An optical
combiner receives the beams of light and combines the beams of light into
a single forward propagating beam of light so that substantially all
optical radiation within each beam of light overlaps the optical
radiation each other beam to form the single beam. A reflective element
is located to receive the single forward propagating beam of light and
transmits greater than 60% of the single forward propagating beam of
light therethrough. The reflective element reflects between 3 40% of the
single forward propagating beam back to the laser diodes as feedback to
stabilize said laser diodes.