LASER LIGHT SOURCE UNIT, AND PHOTOACOUSTIC IMAGE PRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain Q switch pulse oscillation while continuously switching a plurality of wave length, by a simple structure, in a laser light source unit.

SOLUTION: A laser light source unit 13 emits pulse laser beams of a plurality of wave length different from each other. A flash lamp 52 irradiates a laser rod 51 with exciting light. A pair of mirrors 53 and 54 oppose across the laser rod 51. An optical resonator is configured by the pair of mirrors 53 and 54. Wave length selecting means 56 controls the wave length of light resonating in the optical resonator to be any one of the plurality of wave length which the laser light source unit 13 should emit. Driving means 57 drives the wave length selecting means 56 so as to make the optical resonator oscillate Q-switch pulse.

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