| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a laser light generating device small-sized while efficiently generating laser light in the ultraviolet range. SOLUTION: The laser light generating device is so constituted that output light having 1st wavelength obtained by a semiconductor laser 1 containing gallium nitride is introduced into an external resonator 10 using nonlinear optical crystal 15. The output light is thus passed through the nonlinear optical crystal 15 and then ultraviolet rays which are reduced in wavelength are outputted as laser light. Further, the nonlinear optical crystal is held at low temperature to make the wavelength shorter.</p> |
