| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Research Abstract |
We observed distinct two-wavelength oscillations from a compact solid-state laser and an external cavity semiconductor laser by partially-inserting a commercially available cover glass etalon into those laser cavities. The frequency interval of the two-wavelength oscillation corresponded to six times the free spectral range(FSR) of the cover glass etalon. It was confirmed that the constructed compact two-wavelength oscillation lasers were useful for a pump laser of a terahertz time-domain spectroscopy system by experimentally examining two-wavelength oscillations in terms of the characteristics of the transverse mode, the time stability of the oscillation, and the variable characteristics of the frequency interval.
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