2011 Fiscal Year Final Research Report
Two-wavelength oscillation from laser a cavity partially-inserted a cover glass etalon and its application to THz-wave generation
| Project/Area Number |
21560044
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
WADA Kenji 大阪府立大学, 大学院・工学研究科, 准教授 (40240543)
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| Project Period (FY) |
2009 – 2011
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| Keywords | テラヘルツ / 半導体レーザー / 2波長発振 / 光伝導アンテナ / 時間領域分光法 |
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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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