| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
We attained the Q-switched pulse oscillation and wavelength tuning in Tm-doped fiber lasers with all-fiber configuration. In order to obtain the dynamic loss in the gain band using a piezoelectric actuator, we formed variable microbending into the fiber in which the coating layer was flattened. When the 100 mW-class laser diode emitting 1.63μm wavelength was used as the pump source, the output laser pulse showed the emission wavelength of typically 1.9μm and the peak power of order of watts with a pulse width of 1μs. We also demonstrated the wavelength tuning span of 100 nm by means of the tunable fiber grating formed by the coil spring.
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