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Narrow-linewidth laser source with precision frequency tunability for distributed optical sensing applications

机译:具有精确频率可调性的窄线宽激光源,用于分布式光学传感应用

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We demonstrate a narrow-linewidth laser source for high spatial resolution distributed optical sensing by utilizing the high-order modulation sidebands injection locking. A pair of phase-locked lasers with arbitrary frequency offset from 5 GHz to 50 GHz is generated. Meanwhile, a linearized frequency sweep covering range of 15 GHz in 6 ms with frequency errors of 240 kHz from linearity is also achieved using the same scheme, the instantaneous linewidth of the frequency-swept laser is measured to be ~2.5 kHz.
机译:我们演示了通过利用高阶调制边带注入锁定实现高空间分辨率分布式光学传感的窄线宽激光源。产生一对具有从5 GHz到50 GHz的任意频率偏移的锁相激光器。同时,采用相同的方案也可以实现线性扫频,覆盖范围为6 GHz的15 GHz频率和线性误差为240 kHz的频率,扫频激光器的瞬时线宽测得为〜2.5 kHz。

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