Patent ID: 9559492
Date: 2017-01-31
CPC Classifications: G01N,G02B,H01S,Y10S

Claim:
1. A laser system comprising: a semiconductor laser adapted to emit a beam of coherent light when supplied with an electrical current; and a driving circuit adapted to supply a current to the semiconductor laser and to modulate the current supplied to the semiconductor laser within a determined integration time during which radiation including radiation caused by the coherent light is captured by an electronic imager of imaging system to form an image; wherein the current is modulated so that the semiconductor laser will emit light having a first output intensity and a first transverse mode structure during a first modulation and a second transverse mode structure having substantially the first output intensity during a second modulation causing a shift in a position of a speckle pattern during the integration time that reduces the appearance of speckle in the captured image.