| 摘要 |
<p>A method of operating a laser (104) using a laser driver (102) , including the steps of : providing the laser driver (102) with a first electrical input (106) indicative of a desired value for an output characteristic of the laser; and controlling a second electrical input from the laser driver (102) to the laser (104) on the basis of said first electrical input (106) and an electrical indicator (322) of an actual value of said output characteristic of the laser with reference to a first electrical reference (206) , and further including the step of : controlling the first electrical input (106) on the basis of said electrical indicator (322) of an actual value of said output characteristic of the laser with reference to a second electrical reference (314) of greater reliability than the first electrical reference (206) so as to compensate for any variation of the first electrical reference (206) .</p> |
