| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Research Abstract |
An optimum design of a tiling scheme with nonlinear optical crystals for a large scaleoptical parametric chirped pulse amplification system was achieved. In comparison withthe single-pass configuration, the enhancement factor of the second-harmonic laser at 532nm with the two-pass configuration is up to 2.5 in a type I beta-barium borate crystal. Thepeak-intensity stability of a nanosecond-order fundamental laser at 1064 nm is improvedfrom 7% to 2% with a type I non-critical phase-mismatching lithium triborate crystalheated at an environment temperature of 146oC. In addition, a simple method with theparameter S used to evaluate the thickness of the nonlinear optical crystal correspondingto the maximum second-harmonic intensity was achieved under the phase-mismatchingcondition.
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