We developed a new method to stabilize the frequency of a laser to an optical resonator using an all passive approach utilizing spatial modes of light. This method is operating with an unprecedented locking stability of 5×10-7 fraction of the linewidth of the cavity at 10 s averaging time.
High precision laser frequency offset stabilization
A new hybrid electronic filter discriminator approach to stabilizing the beatnote frequency of two lasers with very low instability.
Stabilizing single-sideband operation in an IQ electrooptic modulator
A a parallel dual Mach-Zehnder electrooptic modulator can generate a single sideband modulation for laser frequency shifting applications in the 10 GHz range. However, the interferometric cancellation of the carrier and the unwanted sideband is subject to temporal drift. We developed a new method based on a high frequency modulation-demodulation to stablize the cancellations without imprinting undesired sidebands near the the signal frequency.
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