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Laser offset-frequency locking up to 20 GHz using a low-frequency electrical filter technique

机译:使用低频电滤波器技术将激光偏移频率锁定到20 GHz

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摘要

A simple, easy-to-implement, and robust technique is reported to offset lock two semiconductor lasers with a frequency difference easily adjustable up to a couple of tens of gigahertz (10 and 19 GHz experimentally demonstrated). The proposed scheme essentially makes use of low-frequency control electronics and may be implemented with any type of single mode semiconductor laser, without any requirement for the laser linewidth. The technique is shown to be very similar to the wavelength modulation spectroscopy method commonly used for laser stabilization onto molecular absorption lines, as demonstrated by experimental results obtained using 935 nm laser diodes.
机译:据报道,一种简单,易于实施且坚固耐用的技术可以偏移锁定两个半导体激光器,其频率差可轻松调节至数十千兆赫兹(实验证明为10 GHz和19 GHz)。所提出的方案实质上利用了低频控制电子设备,并且可以用任何类型的单模半导体激光器来实现,而不需要激光器线宽。如使用935 nm激光二极管获得的实验结果所示,该技术与波长调制光谱法非常相似,该方法通常用于将激光稳定在分子吸收线上。

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