| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
We study high-efficiency ultrashort pulse generation from mode-locked laser with intra-cavity highly nonlinear media. Spectral broadening inside mode-locked laser by using intra-cavity highly nonlinear media is advantageous to obtain ultrashort pulses and broad output spectra because nonlinear effects are easily enhanced by resonation inside the cavity.
For the analysis, we used two theories; i.e. a laser efficiency theory in which high gain medium by high intensity pumping which causes high-thermo-optic effects and a nonlinear Schroedinger equation in which a gain medium, a fast saturable absorber for mode-locking, an output coupler as a cavity loss, the second, third and fourth order dispersion are included. On the nonlinear effect, self-phase modulation in the gain and nonlinear media are only included. From the analysis, high-efficiency ultrashort pulse generation in which the output spectra and pulse exceeding the gain spectra.
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