| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser device that suppresses the complication of an optical system and has high read-out efficiency of hologram information from a record medium. <P>SOLUTION: The laser device includes: a light source 10 that emits a fundamental wave light L1 in which wider bandwidth is obtained; and an output device 20 that selectively outputs a second harmonic wave obtained by performing wavelength conversion on the fundamental wave light L1 fixed to a single frequency or the fundamental wave light L1 in which the wider bandwidth is obtained after the fundamental wave light L1 is incident. <P>COPYRIGHT: (C)2012,JPO&INPIT |
