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单词 photomixing
释义

photomixing /ˌfəutə'miksiŋ/

英汉-汉英词典
n. 光混频
词组 | 习惯用语
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  • photochemical adj. 光化作用的;光化学的
  • photofinishing n. 照相洗印加工,照相洗印服务
  • photometric adj. 光度计的;光度测定的

网络短语:
photomixing 光混频
photomixing device 光源频器
photomixing technique 光混频技术
microwave photomixing 微波光电混频
nonlinear photomixing 非线性光混频
英语百科

Photomixing

Photomixing is the generation of continuous wave terahertz radiation from two lasers. The beams are mixed together and focused onto a photomixer device which generates the terahertz radiation. It is technologically significant because there are few sources capable of providing radiation in this waveband, others include frequency multiplied electronic/microwave sources, quantum cascade laser and ultrashort pulsed lasers with photoconductive switches as used in terahertz time-domain spectroscopy. The advantages of this technique are that it is continuously tunable over the frequency range from 300 GHz to 3 THz (10 cm to 100 cm) (1 mm to 0.1 mm), and spectral resolutions in the order of 1 MHz can be achieved. However, the achievable power is on the order of 10 W.

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