| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2011: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2010: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2009: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Research Abstract |
Novel single crystals of Nd : LaVO4 were grown by the floating zone method and their spectral properties were investigated aiming for development of an ultra-short pulse laser system using a laser diode as a pumping source. The crystals were grown along Z-axis, which is one of the optical elasticity axes, and they were of optically high quality without any macroscopic defects. The absorption and emission spectra showed unusually broadened peaks as a Nd-doped crystals, and their optical aisotropy along each elasticity axis is not significant. When single-mode oscillation was examined, a high slope efficiency of 76 %, which is close to theoretical one, was obtained. A broadened laser spectrum of 14 nm was obtained by multi-mode oscillation, and it is accordingly possible to achieve an ultra-short pulse less than 300 femtosecond.
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