Ultraviolet Radiation Sensor Systems and Methods for Laser Pulse Energy Control in Eye Surgery

摘要

Systems are provided for delivering a calibrated ultraviolet radiation pulse at a treatment plane during a laser-ablation treatment of a patient's eye. Exemplary systems include an ultraviolet radiation source, and a fluorescent plate positioned to receive an initial ultraviolet radiation pulse produced by the ultraviolet radiation source. The fluorescent plate generates a visible light pulse in response to the initial ultraviolet radiation pulse. Exemplary systems further include a photon detector positioned to receive the visible light pulse for generating an electrical signal in response to the visible light pulse, and a processing module configured to determine an energy of the initial ultraviolet radiation pulse based on an amplitude and a decay time of the electrical signal, determine an energy calibration signal based on the determined energy of the initial ultraviolet radiation pulse, and provide the energy calibration signal to the ultraviolet radiation source for producing the calibrated ultraviolet radiation pulse.