[1] Dwlight L. Woolard, Elliott R. Brown, Michael Pepper et al.. Terahertz frequency sensing and imaging: A time of reckoning future applications [J]. Proc. IEEE, 2005, 93(10):1722～1743

[2] I. S. Gregory, C. Baker. High resistivity annealed low-temperature GaAs with 100 fs lifetimes [J]. Appl. Phys. Lett., 2003, 83(20):4119～4121

[3] Shi Xiaoxi, Zhao Guozhong, Zhang Cunlin et al.. Terahertz radiation properties of low-temperature-grown GaAs photoconductive antenna [J]. Chinese J. Lasers, 2008, 35(3):396～400

[4] Jia Wanli, Shi Wei, Ji Weili et al.. Study of the dipole characteristic of terahertz wave emitted from photoconductor switches [J]. Acta Physica Sinica, 2007, 56(7):3845～3850

[5] Zhang Xianbin, Shi Wei. THz electromagnetic radiation based on the stimulated Raman scattering of polariton [J]. Acta Optica Sinica, 2008, 28(5):1012～1016

[6] J. Zhang, Y. Hong, S. L. Braunstein et al.. Terahertz pulse generation and detection with LT-GaAs photoconductive antenna [J]. IEEE Proc-Optoelectron, 2004, 151(2):98～102

[7] G. Zhao, R. N. Schouten, N. van der Valk et al.. Design and performance of a THz emission and detection setup based on a semi-insulating GaAs emitter [J]. Revies of Scientific Instruments, 2002, 73(4):1715～1719

[8] Zheng Fanghua, Liu Huan, Li Xifu et al.. Simultaneous dual-wavelength quasi-continuous-wave laser-diode-end-pumped Nd∶YAG laser for terahertz wave sourse [J]. Chinese J. Lasers, 2008, 35(2):200～205

[9] Jie Shan, Tony F. Heinz. Terahertz radiation from semiconductors [J]. Topics Appl. Phys., 2004, 92:1～59

[10] G. Mouret, W. Chen, D. Boucher et al.. High-power terahertz radiation from a high-repetition-rate large-aperture photoconducting antenna [J]. Microwave and Optical Technol. Lett., 1998, 17(1):23～27

[11] S. Gupta, M. Y. Frankel, J. A. Valdmanis et al.. Subpicosecond carrier lifetime in GaAs grown by molecular beam epitaxy at low temperatures [J]. Appl. Phys. Lett., 1991, 59(25):3276～3278

[12] Y. Cai, I. Brener, J. Lopata et al.. Design and performance of singular electric field terahertz photoconducting antennas [J]. Appl. Phys. Lett., 1997, 71(15):2076～2078