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테라헤르츠파 발생을 위한 고효율 전기광학 퀴놀리니움 단결정
- Alternative Title
- Jae-Hyeok Jeong
- Author(s)
- Jeong, Jae-Hyeok
- Alternative Author(s)
- Jae-Hyeok Jeong
- Advisor
- 권오필
- Department
- 일반대학원 분자과학기술학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2012-02
- Language
- eng
- Alternative Abstract
- We designed and synthesized a series of new electro-optic quinolinium crystals with modifying sulfonated anions for THz applications. Compared previously reported HMQ-T (2-(4-hydroxy-3-methoxystyryl)-1-methylquinolinium 4-methylbenzenesulfonate) crystals exhibiting about 3 times higher THz generation efficiency than benchmark polyene crystals, newly designed HMQ-TMS (2-(4-hydroxy-3-methoxystyryl)-1-methylquinolinium 2,4,6-trimethylbenzenesulfonate) crystals possess completely optimal molecular packing for electro-optic applications and exhibit 20% larger nonlinear optical responses. By enhancing solubility with 3.4 times higher than HMQ-T crystals, bulk HMQ-TMS crystals with a size of up to 18 ？e 15 ？e 8 mm3 are easily grown by slow cooling method. While thin thickness with small size of HMQ-T crystals limited the beam path-length and aperture size, respectively for THz wave generation, thick thickness with large size of HMQ-TMS crystals allowed longer beam path-length and larger aperture size. We have demonstrated THz generation with HMQ-TMS crystals by optical rectification using 200 fs pulses at pump wavelength of 836 nm.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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