Chinese Optics Letters, 2003, 1 (5): 05308, Published Online: Jun. 6, 2006
Terahertz generation from Si_(3)N_(4) covered photoconductive dipole antenna Download: 521次
320.5390 picosecond phenomena 320.7080 ultrafast devices 320.7130 ultrafast processes in condensed matter including semiconductors
Abstract
We observe enhanced terahertz (THz) radiation generated from a Si_(3)N_(4) film-coated GaAs photoconductive dipole antenna. Compared to an uncoated antenna with identical electrode geometry and optical excitation power, the Si_(3)N_(4) film-coated antenna has a higher effective DC resistance and larger breakdown voltage. As a result, the peak amplitude of generated THz radiation is significantly enhanced due to the Si_(3)N_(4) film-coated layer.
Wei Shi, Jingzhou Xu, X.-C. Zhang. Terahertz generation from Si_(3)N_(4) covered photoconductive dipole antenna[J]. Chinese Optics Letters, 2003, 1(5): 05308.