| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laser light source making band width of a wavelength of output light to be narrow. <P>SOLUTION: The laser light source 1 is provided with a laser resonator where a light amplifying fiber 11 outputting discharged light on a resonance optical path, an excited light source 12, an optical path switch means which has a first port 13a and a second port 13b, which are arranged on the resonance optical path of the laser resonator, inputs discharged light outputted from the light amplifying fiber 11 to the first port 13a, outputs it from the second port 13b and controls a light transmittable state of the optical path between the first port 13a and the second port 13b, a diffraction grating 16 which spectrally separates discharged light outputted from the second port 13b, and a total reflection mirror 17 reflecting light of the specified wavelength in discharged light which is spectrally separated by the diffraction grating 16 to the second port 13b. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
