Abstract
An integrated single-sideband modulator is used as the sole wide-bandwidth frequency actuator in a Pound–Drever–Hall locking loop. Thanks to the large modulation bandwidth, the device enables a locking range of and a control bandwidth of 5 MHz without the need for a second feedback loop. As applied to the coupling of an extended-cavity diode laser at 1.55 μm to a high-finesse optical cavity, the in-loop frequency noise spectral density reaches a minimum of at 1 kHz.
© 2015 Optical Society of America
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