Patent ID: 6654163
Filing Date: 2003-11-25
Classification: H01S

Abstract:
Optical amplifier apparatus comprising:an amplification medium that has an approximately rectangular cross-section with a long edge and a short edge, at least two highly reflective mirrors, wherein the amplification medium is arranged between the at least two highly reflective mirrors, wherein the long edge or the short edge of the cross-section is along the x-axis or the y-axis, and the z-axis is the optical axis, and wherein the x-, y- and z-axes constitute a rectangular system of coordinates, wherein the mirrors are designed and arranged in such a way that a beam that is to be amplified, emitted in by an oscillator, passes through the amplification medium in the xy-plane several times and becomes amplified, wherein the dimension of the beam expands in the x-direction after each passage through, and wherein the resonator is stable in the yz-plane due to a cylindrical lens effect.