Laser system
AssigneeLaser Quantum Limited
InventorAlan Cox
Life of this patent
Estimating the term…
Abstract
A laser system comprising a laser configured to generate a laser beam, a power supply arranged to provide a drive power to the laser, a photodetector arranged to detect the power of the laser beam and provide a detection signal from the power of the laser beam and a feedback loop arranged to form a feedback signal by subtracting a target signal 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.
Claims39
A laser system comprising:
- a laser configured to generate a laser beam;
- a power supply arranged to provide a drive power to the laser;
- a photodetector arranged to detect the power of the laser beam and provide a detection signal from the power of the laser beam;
- and
- a feedback loop arranged to:
- form a feedback signal by subtracting a target signal 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.
A method of reducing noise in a laser beam generated by a laser, the method comprising:
- detecting the power of the laser beam to form a detection signal;
- forming a feedback signal by subtracting a target signal from the detection signal, wherein the feedback signal has a high bandwidth;
- amplifying the feedback signal;
- and
- adjusting, according to the amplified feedback signal, a drive power which drives the laser, thereby reducing noise in the laser beam.
Dependencies are inferred from the claim text.