Patent ID: 8073021
Filing Date: 2011-12-06
Classification: G02F,H01S

Abstract:
1. A method for operating a frequency converted light source comprising a semiconductor laser optically coupled to a wavelength conversion device, the method comprising: (i) sweeping a wavelength control signal of the semiconductor laser over an initial signal range and measuring an optical power of a resulting frequency converted output beam emitted from the wavelength conversion device; (ii) sweeping the wavelength control signal of the semiconductor laser over at least one truncated signal range and measuring the optical power of the resulting frequency converted output beam, wherein the at least one truncated signal range is less than a preceding signal range and the at least one truncated signal range is centered on a point corresponding to a maximum optical power of a frequency converted output beam of the sweep of the wavelength control signal over the preceding signal range; (iii) determining an operational signal range for the wavelength control signal, wherein a midpoint of the operational signal range corresponds to the maximum optical power of the resulting frequency converted output beam of the sweep of the wavelength control signal over the preceding signal range; and (iv) initiating closed-loop feedback control of the wavelength control signal in the operational signal range.