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US 11,605,931 B2Granted
Laser diode drive system
AssigneeM Squared Lasers Limited
InventorsGraeme Peter Alexander Malcolm, Gareth Thomas Maker, William Miller
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AssigneeM Squared Lasers Limited
InventorsGraeme Peter Alexander Malcolm, Gareth Thomas Maker, William Miller
Estimating the term…
A laser diode drive system for generating a drive current for a laser diode is described. The laser diode drive system comprises a first laser diode driver connected to the laser diode by a first cable to provide a drive current source for the laser diode. A second laser diode driver is then connected to the laser diode by a second cable to provide a low current sink for the laser diode. A feedback control loop is employed to provide a feedback signal for the second laser diode driver from to sample of an output field of the laser diode. The laser diode drive system exhibits low power consumption while being capable of creating sufficient feedback bandwidth to reduce the excess optical noise by at least an order of magnitude at 1 MHz compared with laser diode drive systems comprising just a first laser diode driver.
A laser diode drive system suitable for providing a drive current for a laser diode to generate a continuous-wave (CW) optical output field from the laser diode, the laser diode drive system comprising:
A method of providing a drive current to a laser diode to generate a continuous-wave (CW) optical output field from the laser diode, the method comprising:
Dependencies are inferred from the claim text.