The Speckle Free Laser is an ideal
replacement of laser or SLD for ophthalmic wavefront instruments or other spot image applications. It employs a spatial phase modulator in a laser beam path. The spatial phase modulator modifies the
relative phase across the beam and randomizes it rapidly in a time sequence, while maintaining the beam quality close to diffraction limit. As a result, the laser beam is substantially free of
speckles when its spot image is recorded with a CCD camera. 