Browse > Article
http://dx.doi.org/10.3807/KJOP.2005.16.6.553

Pulsed Terahertz Emission and Detection Properties from ZnTe Crystal  

Jin, Yun-Sik (Applied electro-physics research group, Korea Electrotechnology Research Institute)
Jeon, Seuk-Gy (Applied electro-physics research group, Korea Electrotechnology Research Institute)
Kim, Keun-Ju (Applied electro-physics research group, Korea Electrotechnology Research Institute)
Sohn, Chae-Hwa (Applied electro-physics research group, Korea Electrotechnology Research Institute)
Jung, Sun-Shin (Applied electro-physics research group, Korea Electrotechnology Research Institute)
Publication Information
Korean Journal of Optics and Photonics / v.16, no.6, 2005 , pp. 553-559 More about this Journal
Abstract
Pulsed terahertz (THz) radiation was generated by optical rectification and detected by a fee space electro-optic sampling (FS-EOS) method. We used ZnTe (110) crystals for both generation and detection. By coating dielectric anti-reflection film on the ZnTe crystal surface, we can reduce the reflectance of a pump laser beam from $30\%$ to $2\%$, and the terahertz pulse amplitude increased $27\%$ compared with an uncoated crystal. A wider bandwidth of THz radiation was obtained by using a thinner crystal but the signal intensity was decreased in this case. And variations of THz radiation by changing orientation of the ZnTe crystal with respect to the pump (or probe) laser polarization, and by changing the power of the pump laser have also been investigated and discussed.
Keywords
Terahertz; Optical rectification; Electro-optic Sampling; ZnTe crystal;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 B. Ferguson and X. -C. Zhang, 'Materials for terahertz science and technology,' Nature Materials, vol. 1, pp. 26-33. 2002   DOI   ScienceOn
2 R. M. Woodward, B. E. Cole, V. P. Wallace, R. J. Pye, D. D. Arnone, E. H. Linfild and M. Pepper, 'Terahertz pulse imaging in reflection geometry of human skin cancer and skin tissue,' Phys. Med Biol. vol. 47, pp. 3853-3863, 2002   DOI   ScienceOn
3 VM. C. Kemp, P. F. Taday, B. E. Cole, J. A. Cluff, A. J. Fitzgerald, W. R. Tribe, 'Security applications ofterahertz technology,' Proc. of SPIE, vol. 5070, pp. 44-51, 2003   DOI
4 전태인, 김근주, '좁은 간격의 테라헤르츠 다이폴 안테나를 이용한 이진신호의 발생과 검출', 한국광학회지, 제 13권, pp. 430-434, 2002   DOI
5 Q. Wu and X. -C. Zhang, 'Ultrafast electro-optic field sensors,' Appl. Phys. Lett. vol. 68, pp. 1604-1606, 1996   DOI
6 P. C. M. Planken, H. K. Nienhuys, H. J. Bakker and T. Wenckebath, 'Measurement and calculation of the orientation dependence of terahertz pulse detection in ZnTe,' J. Opt. Soc. Am. B, vol. 18, pp. 313-317, 2001   DOI
7 T. J. Carrig, G. Rodriguez, T. Sharp Clement, A. J. Taylor, and K. R. Stewart; 'Scaling ofterahertz radiation via optical . rectification in electro-optic crystals,' Appl. Phys. Lett., vol. 66, pp. 121-123, 1995   DOI   ScienceOn
8 F. G. Sun, X. -C. Zhang and W. Ji, 'Two-Photon-Absorption Induced Saturation of THz Radiation in ZnTe,' CLEO, OSA Technical Digest, p. 479, 2000
9 D. Dragoman and M. Dragoman, 'Terahertz fields and applications,' Progressin Quantum Electronics, vol 28, pp. 1-66, 2004   DOI   ScienceOn
10 Q. Chen and X. -C. Zhang, 'Polarization modulation in optoelectronic generation and detection ofterahertz beams,' Appl. Phys. Lett., vol 74, pp. 3435-3437, 1999   DOI
11 A. Rice, Y. Jin, X. F. Ma, X. -C. Zhang, D. Bliss, J. Larkin, and M. Alexander, 'Terahertz optical redtification from <110> zinc-blende crystals,' Appl. Phys. Lett. vol. 64, pp. 1324-1326, 1994   DOI   ScienceOn
12 G. Zhao, R. N. Schouten, N. van der Valk, W. Th. Wenckebach, and P. C. M. Planken, 'Design and performance of a THz emission and detection setup based on a semi-insulating GaAs emitter,' Rev. Sci. Instrum., vol. 73, pp. 1715-1719, 2002   DOI   ScienceOn