Patent ID: 8259385

Claim:
A method for operating a light source comprising a laser source optically coupled to a wavelength conversion device, the method comprising: directing a pump beam having a fundamental wavelength from the laser source into an input facet of the wavelength conversion device such that the wavelength conversion device emits a wavelength-converted output beam from an output facet of the wavelength conversion device in a field of view of an optical detector; varying a physical property of the wavelength conversion device within individual ones of a succession of consecutive speckle reduction intervals, wherein individual speckle reduction intervals have a duration which is less than an integration time of the optical detector and the physical property of the wavelength conversion device is varied to effect a change in a phase-matched (PM) wavelength of the wavelength conversion device; and adjusting the fundamental wavelength of the pump beam based on the change in the PM wavelength of the wavelength conversion device to maintain efficient wavelength conversion in the wavelength conversion device.