Sub-ppb measurement of a fundamental band rovibrational transition in HD

Abstract

We report a direct measurement of the 0-1 R(0) vibrational transition frequency in ground-state hydrogen deuteride (HD) using infrared-ultraviolet double resonance spectroscopy in a molecular beam. Ground-state molecules are vibrationally excited using a frequency comb referenced continuous-wave infrared laser, and the excited molecules are detected via state-selective ionization with a pulsed ultraviolet laser. We determine an absolute transition frequency of 111 448 815 477(13) kHz. The 0.12 parts-per-billion (ppb) uncertainty is limited primarily by the residual first-order Doppler shift.

5 pages, 4 figures

References in corpus (3)

• Constraints on extra dimensions from precision molecular spectroscopy
• Lamb-dips and Lamb-peaks in the saturation spectrum of HD
• Ultra-high finesse cavity-enhanced spectroscopy for accurate tests of quantum electrodynamics for molecules

Cited by in corpus (11)

• Analog FM free-space optical communication based on a mid-infrared quantum cascade laser frequency comb
• Stimulated-Raman-Scattering Metrology
• Hyperfine structure in the HD molecule
• Fano-like resonance due to interference with distant transitions
• Leading-order QED effects in the ground electronic state of molecular hydrogen
• Hyperfine components of all rovibrational quadrupole transitions in the H${}_2$ and D${}_2$ molecules
• Rotational level spacings in HD from vibrational saturation spectroscopy
• Nonrelativistic energy of tritium-containing hydrogen molecule isotopologues
• A Stimulated Raman Loss spectrometer for metrological studies of quadrupole lines of hydrogen isotopologues
• Hyperfine and Zeeman interactions in ultracold collisions of molecular hydrogen with atomic lithium
• Lamb-peak spectrum of the HD (2-0) P(1) line