3 papers
physics.optics2026
Broadband and flat-baseline dual-comb cavity mode dispersion spectroscopy using fiber-based frequency combs
Sho Okubo, Ken Kashiwagi, Koji Hashiguchi +1
We demonstrate broadband dual-comb cavity mode dispersion spectroscopy using mode-locked erbium-fiber frequency combs and a length-tunable optical cavity. The flat baseline and low…
physics.chem-ph2026
Rotational energy levels in the ground vibrational state of methane with kHz-level accuracy from comb-referenced double-resonance and Lamb-dip spectroscopies
Vinicius Silva de Oliveira, Isak Silander, Hiroyuki Sasada +4
Methane is a key spherical-top molecule, yet restrictive selection rules for one-photon transitions have prevented determination of its ground state (GS) energies with state-of-the…
physics.ins-det2025
Optical sound pressure measurement using Fabry-Pérot cavity for primary acoustic standards
Koto Hirano, Wataru Kokuyama, Hajime Inaba +5
Optical sound pressure measurement is a promising technology to establish primary acoustic standards without reliance on specific types of microphones. We developed a precision opt…