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Rapid-phase modulation of terahertz radiation for high-speed terahertz imaging and spectroscopy

机译:太赫兹辐射的快速相位调制,用于高速太赫兹成像和光谱

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摘要

Rapid voltage-controlled phase modulation of cw terahertz (THz) radiation is demonstrated. By transmitting an infrared beam through a lithium niobate phase modulator the phase of the THz radiation, which is generated by the photomixing of two infrared beams, can be directly modulated through a 2pi phase shift. The 100 kHz modulation rate that is demonstrated with this technique is approximately 3 orders of magnitude faster than what can be achieved by mechanical scanning.
机译:演示了快速的电压控制的CW太赫兹(THz)辐射的相位调制。通过将红外光束通过铌酸锂相位调制器传输,可以通过2pi相移直接调制由两个红外光束的光混合产生的THz辐射的相位。用这种技术证明的100 kHz调制速率比机械扫描可以达到的速率快大约3个数量级。

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