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Generate THz of the Nonlinear Optical Difference Frequency and Set up Imaging is Studied

Author: ZhangShouYin
Tutor: SunXiaoHong
School: Zhengzhou University
Course: Optics
Keywords: THz wave radiation THz wave spin wave function Difference frequency of the maximum conversion rate of photons DAST crystal THz wave delayed imaging
CLC: O437
Type: Master's thesis
Year: 2010
Downloads: 101
Quote: 0
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Abstract


Terahertz wave refers frequency electromagnetic waves 0.1THz to 10THz , located in the electromagnetic spectrum between the infrared and microwave regions . Due to the lack of means of generation and detection limit , the understanding of the people of this band is very limited . Now in the space of this special research and explore , but generate terahertz wave THz technology is the key , and nonlinear optical difference frequency and frequency terahertz wave threshold , low-cost , which is the advantage of this method . So this paper mainly discusses issues related to terahertz wave difference frequency and sum frequency generation . The main content and innovative point of this paper is as follows : 1 . An overview of the major characteristics of the THz wave and technological development , the application prospects of the THz wave . The THz wave source , especially the use of nonlinear optical effects generated THz wave source . This article also describes the development and application of terahertz waves based on the nonlinear optical effect . 2 . Determined by analyzing the the photon spin wave terahertz wave function . 3 . Determined by analyzing the difference frequency method of nonlinear optical photon conversion rate of not more than 33.33% , and the frequency of the photon conversion rate of not more than 66.67% , provided the experimental basis for generating THz wave , and pointed out that the three laws of photon absorption . 4 nonlinear crystal DAST difference frequency generated the THz wave theory model of some of the results were calculated and analyzed . 5 discusses the delay terahertz wave imaging .

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CLC: > Mathematical sciences and chemical > Physics > Optics > Nonlinear optical ( light and matter)
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