A laser light source is provided with a pump light source comprising a semiconductor laser, a solid laser medium which is excited by the semiconductor laser, and multi-mode means for changing at least either a longitudinal mode or a transverse mode of laser oscillation of the solid laser. The near field antenna comprises a periodic guided-wave structure, a metallic reflection portion and at least two near field magnetic coupling antennas. The induction coil can be pivoted open while in the shielding enclosure without complete disassembly of the enclosure.