Patent ID: 7366212

Claim:
A coherent light generator comprising: a power supply for converting alternating current into direct current, the power supply having positive and negative output poles; a four lead capacitor having first and second electrical conductors connected to a positive plate of the capacitor and third and fourth electrical conductors connected to the negative plate of the capacitor, the first conductor connected to the positive output pole of the power supply and the third conductor connected to the negative output pole of the power supply; a variable resistor connected between ground and the fourth conductor of the four lead capacitor; a vacuum bulb, the vacuum bulb comprising a hollow sphere surrounding a cathode and an anode, a cathode conductor extending from the cathode to a point outside of the sphere and an anode conductor extending from the anode to a point outside of the sphere, the cathode and anode defining a gap within the vacuum bulb, the cathode conductor connected to the variable resistor; and a thin square metal plate having four corners, each of the four corners electrically connected to anode conductor of the vacuum bulb, the metal plate further electrically connected to the second conductor of the four lead capacitor; wherein the thin metal plate provides an initial coherent light source for the coherent light generator.