First-order thermal insensitivity of the frequency of a narrow spectral hole in a crystal
| Autor: | Zhang, S., Seidelin, S., Targat, R. Le, Goldner, P., Fang, B., Coq, Y. Le |
|---|---|
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 107, 013518 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.107.013518 |
| Popis: | The possibility of generating an narrow spectral hole in a rare-earth doped crystal opens the gateway to a variety of applications, one of which is the realization of an ultrastable laser. As this is achieved by locking in a pre-stabilized laser to the narrow hole, a prerequisite is the elimination of frequency fluctuations of the spectral hole. One potential source of such fluctuations can arise from temperature instabilities. However, when the crystal is surrounded by a buffer gas subject to the same temperature as the crystal, the effect of temperature-induced pressure changes may be used to counterbalance the direct effect of temperature fluctuations. For a particular pressure, it is indeed possible to identify a temperature for which the spectral hole resonant frequency is independent of the first-order thermal fluctuations. Here, we measure frequency shifts as a function of temperature for different values of the pressure of the surrounding buffer gas, and identify the ``magic'' environment within which the spectral hole is largely insensitive to temperature. Comment: 6 pages, 5 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|