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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.4
- 수록면
- 179 - 184 (6page)
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초록· 키워드
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Terahertz (THz) wave generation by periodically poled BaTiO₃ (PPBT) with a quasi-phase-matching (QPM) scheme based on cascaded difference-frequency generation (DFG) is theoretically analyzed. The cascaded DFG processes comprise cascaded Stokes and anti-Stokes processes. The calculated results indicate that the cascaded Stokes processes are stronger than the cascaded anti-Stokes processes. Compared to a noncascaded Stokes process, THz intensities from 20<SUP>th</SUP>-order cascaded Stokes processes increase by a factor of 30. THz waves with a maximum intensity of 0.37 MW/mm² can be generated by 20<SUP>th</SUP>-order cascaded DFG processes when the optical intensity is 10 MW/mm², corresponding to a quantum conversion efficiency of 1033%. The high quantum conversion efficiency of 1033% exceeds the Manley-Rowe limit, which indicates that PPBT is an excellent crystal for THz wave generation via cascaded DFG.
목차
I. INTRODUCTION
II. THEORETICAL MODEL
III. CALCULATIONS
IV. CONCLUSION
REFERENCES
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