Tunable UV spectrometer for Doppler broadening thermometry of mercury

We realized a UV laser spectrometer at 253.7 nm for Doppler broadening thermometry on the 1S0-3P1 intercombination line in mercury vapors. Our setup is based on the two-stage duplication of a 1014.8 nm diode laser in a fiber-coupled periodically poled lithium niobate waveguide crystal and a beta-barium borate crystal in enhancement cavity, and we exploit injection locking of a 507.4 nm diode laser to boost the available optical power after the first duplication. Our setup addresses spectroscopic features that allow the thermodynamic temperature determination of the atomic sample from the absorption profile with 10-6 accuracy. The realized UV laser source has 1×10-4 relative intensity stability, Gaussian shape, and over 10 GHz mode-hop-free tunable range. These features are crucial for the practical realization of the kelvin in the new International System of Units through a spectroscopic technique.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:45

Enthalten in:

Optics letters - 45(2020), 13 vom: 01. Juli, Seite 3693-3696

Sprache:

Englisch

Beteiligte Personen:

Clivati, Cecilia [VerfasserIn]
Gravina, Stefania [VerfasserIn]
Castrillo, Antonio [VerfasserIn]
Costanzo, Giovanni A [VerfasserIn]
Levi, Filippo [VerfasserIn]
Gianfrani, Livio [VerfasserIn]

Links:

Volltext

Themen:

Journal Article

Anmerkungen:

Date Revised 07.07.2020

published: Print

Citation Status PubMed-not-MEDLINE

doi:

10.1364/OL.393793

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM312086040