| 摘要 |
PROBLEM TO BE SOLVED: To provide a wavelength conversion laser apparatus which can maintain a light exiting position constant. SOLUTION: In the wavelength conversion laser apparatus, a laser light source 11 emits a first wavelength light. A non-linear optical crystal 15 converts the first wavelength light into a second wavelength light, and a rotational driver makes the non-linear optical crystal rotate so as to alter the incidence angle of the first wavelength light, with respect to the non-linear optical crystal. A rotational drive controller 17 detects a portion of the output of the second wavelength light, generates the rotational control signal of the non-linear optical crystal according to the change in the output, and transmits the rotational control signal to the rotational driver. A beam location maintaining mirror 19 retroreflects the second wavelength light outputted from the non-linear optical crystal, along a substantially identical path as that of the first wavelength light from the laser light source, to the optical crystal, and an output beam distributor 14, disposed between the laser light source and the optical crystal, guides the retroreflected second wavelength light in the desired output direction. COPYRIGHT: (C)2008,JPO&INPIT
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