WAVELENGTH STABILIZATION FOR AN OPTICAL SOURCE

摘要

A wavelength error for each pulse in a first subset of pulses emitted from an optical source is determined, the wavelength error being the difference between a wavelength for a particular pulse and a target wavelength; a pulse-by-pulse correction signal is determined based on the determined wavelength error, the pulse-by-pulse correction signal including a correction signal associated with each pulse in the first subset of pulses; and a correction based on the determined pulse-by-pulse correction signal is applied to each pulse in a second subset of pulses emitted from the optical source, where applying a correction to a pulse in the second subset of pulses reduces the wavelength error of the pulse in the second subset of pulses.

主权项

1. A method comprising:
receiving a pulsed light beam emitted from an optical source, the pulsed light beam comprising at least a first burst of pulses of light and a second burst of pulses of light, the first burst of pulses comprising a first subset of pulses and the second burst of pulses comprising a second subset of pulses; determining a wavelength error for each pulse in the first subset of pulses, the wavelength error being the difference between a wavelength for a particular pulse and a target wavelength; determining a pulse-by-pulse correction signal based on the determined wavelength error, the pulse-by-pulse correction signal comprising a correction signal associated with each pulse in the first subset of pulses; and applying a correction based on the determined pulse-by-pulse correction signal to each pulse in the second subset of pulses, wherein applying a correction a pulse in the second subset of pulses reduces the wavelength error of the pulse in the second subset of pulses.