Optical amplifier arrangement used with oscillator, has mirror that is arranged such that amplified beam reflected by mirror is passed through gain medium and output beam is amplified

摘要

The optical amplifier arrangement has a rectangular gain medium (1) and two folding mirrors (2,3). The radii of curvature and arrangement of the two folding mirrors are set such that the reinforcing beam (11) transmitted to gain medium between the two folding mirrors parallel to folding plane is amplified in gain amplification volume of gain medium. A mirror (4) is arranged such that the amplified beam reflected by the mirror is passed through gain medium and the output beam (99) is amplified.