Work

First Measurements of Spectral Hole Line Shifts at Dilution Temperatures for Laser Stabilization

Year: 2023

Type: conference-paper

Abstract: Here we report on the status of the Spectral-Hole Burning (SHB) laser-stabilization experiment at LNE-SYRTE, focusing on our first measurements of thermally induced frequency shifts of spectral holes at dilution temperatures (T0 < 1 K). The effect, which is predicated to scale as T 4 , produces shifts of order 1-10 Hz over its ≈ 517 THz center at these temperatures. To meet this challenge, we introduced a novel temperaturemodulation based approach to spectral-hole line shift measurements, allowing integration time of the small signals. We find a preliminary value for the line-shift constant of Eu 3+ :Y2SiO5, α = 107 Hz K-4 , a first at dilution temperatures.

Source: HAL

Authors: Hartman, M. T., Lin, X, Pointard, B, Le Targat, R, Fang, B, Le Coq, Y, Goldner, P, Seidelin, S.

Institutions: Systèmes de Référence Temps-Espace, Laboratoire Temps Espace, Chimie ParisTech - PSL, Université Paris Sciences et Lettres

Language: English

Topic: Advanced Frequency and Time Standards

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4391912302

FWCI:

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