Patent ID: 6157661
Filing Date: 2000-12-05
Classification: A61B,A61C,H01S

Abstract:
A laser system for providing a pulsed laser output, the system comprising:(a) a laser tube that when supplied with electrical power produces a light of a specific wavelength,(b) a laser tube output from which laser light from said laser tube is emitted,(c) a supply of electrical power for powering said laser tube,(d) control circuitry that controls said supply of electrical power so that said laser tube is powered according to a scheme that causes said laser tube to emit pulsed rather than constant laser light through said laser tube output, said control circuitry including:(i) a capacitor bank charge limit circuit that provides consistent electrical current to said laser tube,(ii) a boost circuit which provides a boost voltage to said laser tube in order to aid in reliable laser tube starting,(iii) a trigger circuit for triggering said laser tube into a state of conduction, and(iv) a timing circuit for timing the emission of laser pulses from said laser tube, said timing circuit using a slope detector circuit to trigger a pulse generator in said trigger circuit that triggers turning on said laser tube.