Frequency Comb Velocity-Modulation Spectroscopy

Abstract

We have demonstrated a new technique that provides massively parallel comb spectroscopy sensitive specifically to ions through the combination of cavity-enhanced direct frequency comb spectroscopy with velocity modulation spectroscopy. Using this novel system, we have measured electronic transitions of HfF+ and achieved a fractional absorption sensitivity of 3 x 10-7 recorded over 1500 simultaneous channels spanning 150 cm-1 around 800 nm with an absolute frequency accuracy of 30 MHz (0.001 cm-1). A fully sampled spectrum consisting of interleaved measurements is acquired in 30 minutes.

References in corpus (4)

• Coherent, multi-heterodyne spectroscopy using stabilized optical frequency combs
• The Diffuse Interstellar Bands: A Major Problem in Astronomical Spectroscopy
• Candidate molecular ions for an electron electric dipole moment experiment
• Identification of H${}_2$CCC as a diffuse interstellar band carrier

Cited by in corpus (7)

• High magnetic fields for fundamental physics
• Mid-infrared VIPA Spectrometer for Rapid and Broadband Trace Gas Detection
• Broadband velocity modulation spectroscopy of HfF^+: towards a measurement of the electron electric dipole moment
• Broadband velocity modulation spectroscopy of ThF${}^{+}$ for use in a measurement of the electron electric dipole moment
• Quantitative modeling of complex molecular response in coherent cavity-enhanced dual-comb spectroscopy
• Cavity-enhanced ultrafast two-dimensional spectroscopy using higher-order modes
• Near-infrared LIF spectroscopy of HfF