| 摘要 |
A laser system (100) comprising a laser configured to generate a laser beam, a power supply (107) arranged to provide a drive power to the laser, a photodetector (106) arranged to detect the power of the laser beam and provide a detection signal (I det ) from the power of the laser beam and a feedback loop arranged to form a feedback signal by subtracting a target signal (I tar ) from the detection signal wherein the feedback signal has a high bandwidth, amplify the feedback signal and adjust the drive power according to the amplified feedback signal, thereby reducing noise in the laser beam. |
