Slow light frequency reference cavities—proof of concept for reducing the frequency sensitivity due to length fluctuations
Year: 2022
Type: article
Abstract: Length changes due to thermo-mechanical noise originating from, for example, Brownian motion are a key limiting factor of present day state-of-the-art laser frequency stabilization using Fabry–Pérot cavities. We present a laser-frequency stabilization concept using an optical cavity with a strong slow-light effect to reduce the impact of cavity length changes on the frequency stability. The resulting noise-reduction factor is proportional to the ratio between the light phase and group velocities in the highly dispersive cavity spacer. We experimentally demonstrate a proof-of-principle implementation of this laser-frequency stabilization technique using a rare-earth doped crystalline cavity spacer in conjunction with semi-permanent spectral tailoring to achieve precise control of the dispersive properties of the cavity. Compared to the same setup in the absence of the slow-light effect a reduction in frequency sensitivity of four orders of magnitude was achieved.
Source: New Journal of Physics
Institution: Lund University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,846
Awards: G1023610176, Enhanced optical frequency references using slow light, G1485879709, Cavity-enhanced single ion quantum optics, G3394036192, Scalable quantum computing hardware in rare-earth-ion doped crystals, G4528838316, G6479565870, Quantum state control & manipulation - development of quantum computer hardware, G7903197276, Scalable Rare Earth Ion Quantum Computing Nodes
OpenAlex ID: W3139656106