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 ±75 MHz 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 1 mHz/sqrt(Hz) at 1 kHz.
Wide-bandwidth Pound–Drever–Hall locking through a single-sideband modulator
PREVEDELLI, MARCO;
2015
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 ±75 MHz 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 1 mHz/sqrt(Hz) at 1 kHz.File in questo prodotto:
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