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Compact N2 laser oscillator- amplifier system for laser microbeam application

H. Kurniawan - No affiliation found

1991/04/01 Full-length article DOI: 10.1016/0030-3992(91)90023-H Journal: Optics & Laser Technology

Abstract:

AbstractA new design of an oscillator-amplifier system in the TE N2 laser is presented which uses only a single laser tube. Two apertures, each of 1 mm square, are placed on both sides of the optical cavity to limit transverse modes. The laser light from the optical cavity is folded and sent back into the laser tube after expansion. Thus, laser light which is approximately diffraction limited is obtained with an energy of 50 μ J. It is confirmed that this laser provides a microbeam spot with a diameter of less than 1 μm.