Velocity map ion imaging and velocity-resolved action spectroscopy of H atom photofragments via Doppler-free multiphoton ionization
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2017.03.075
Abstract: Abstract Hydrogen atom photofragments with high velocities in the laboratory frame lead to strong Doppler broadening of the (2 + 1) resonance-enhanced multiphoton ionization transition. Here, an alternative setup for Doppler-free ion imaging is demonstrated and explored… read more here.
Keywords: doppler free; velocity; spectroscopy; multiphoton ionization ... See more keywords
Doppler-free, Stark broadened profiles at low plasma densities in helium
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Quantitative Spectroscopy and Radiative Transfer"
DOI: 10.1016/j.jqsrt.2019.03.020
Abstract: Abstract This work utilizes Doppler-free saturation spectroscopy to measure Doppler-free, Stark broadened spectral profiles for the π-polarization of the HeI 21P → 61D transition in a low density ( n e = 7 × 10 10… read more here.
Keywords: doppler free; spectroscopy; free stark; density ... See more keywords
Doppler-free three-photon spectroscopy on narrow-line optical transitions
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review A"
DOI: 10.1103/physreva.111.033112
Abstract: We demonstrate coherent Doppler-free three-photon excitation of the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{0}$ optical clock transition and the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{1}$ intercombination transition in free-space thermal clouds of $^{88}$Sr atoms. By appropriate orientation of the wavevectors of three lasers incident on… read more here.
Keywords: spectroscopy; free three; three photon; leftrightarrow ... See more keywords
Laser-Frequency Stabilization Using Doppler-Free Spectrum of 87Rb D1 Line Produced by Bichromatic Circularly Polarized Light
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2025.3557829
Abstract: Coherent population trapping (CPT) magnetometers are important geomagnetic measurement tools. However, the shift and jitter of laser frequencies can seriously interfere with the measurement results of CPT magnetometers. A CPT magnetometer uses bichromatic light that… read more here.
Keywords: doppler free; frequency; laser frequency; free spectrum ... See more keywords
Doppler-free spectroscopy of metastable Sr atoms using a hollow cathode lamp.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.001450
Abstract: We report on the demonstration of Doppler-free spectroscopy of metastable Sr atoms using a hollow cathode lamp (HCL). We employed a custom Sr HCL, which is filled with a mixture of 0.5 Torr Ne and… read more here.
Keywords: doppler free; spectroscopy metastable; metastable atoms; atoms using ... See more keywords
Doppler-free three-photon coherence in Doppler-broadened diamond-type atomic system.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.005316
Abstract: We investigated the relationship between three-photon electromagnetically induced absorption (TPEIA) and four-wave mixing (FWM) in the 5S1/2-5P3/2-5D5/2 transition of 87Rb atoms. When the driving field was additionally coupled to the ground and intermediate states of… read more here.
Keywords: doppler free; photon; system; coherence ... See more keywords
Precise and highly-sensitive Doppler-free two-photon absorption dual-comb spectroscopy using pulse shaping and coherent averaging for fluorescence signal detection.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.008957
Abstract: We demonstrated Doppler-free two-photon absorption dual-comb spectroscopy of 5S1/2 - 5D5/2 and 5D3/2 transitions of Rb. We employed simple pulse-shaping of the dual-comb source and eliminated Doppler-broadening backgrounds, which cause fitting errors of the Doppler-free… read more here.
Keywords: doppler free; coherent averaging; detection; dual comb ... See more keywords
Temperature-scanning saturation cavity ring-down spectrometry for Doppler-free spectroscopy.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.010203
Abstract: Saturation cavity ring-down spectroscopy (SCRDS) is a powerful Doppler-free spectroscopy means for measuring absolute frequencies of transitions at the ultra-low uncertainties. We report in this paper a simple way to implement it by temperature scanning… read more here.
Keywords: doppler free; saturation cavity; cavity; spectroscopy ... See more keywords
Mid-infrared Doppler-free saturation absorption spectroscopy of the Q branch of CH4ν3 = 1 band using a rapid-scanning continuous-wave optical parametric oscillator.
Sign Up to like & getrecommendations! Published in 2024 at "Optics letters"
DOI: 10.1364/ol.530567
Abstract: We have developed a mid-infrared Doppler-free saturation absorption spectroscopy apparatus that employs a commercial continuous-wave optical parametric oscillator (CW OPO), complemented by a home-built automation and wavelength scanning system. Here, we report a comprehensive spectral… read more here.
Keywords: free saturation; spectroscopy; doppler free; mid infrared ... See more keywords
Doppler-free spectroscopy of the Cs 6S_1/2−7P_3/2 atomic transition at 456 nm in a nanometric-thick vapor layer
Sign Up to like & getrecommendations! Published in 2025 at "Optics Letters"
DOI: 10.1364/ol.558536
Abstract: The features of Doppler-free resonances detected by probing the $^{133}$Cs atom $6S_{1/2}-7P_{3/2}$ transition at 456 nm in a nanometric-thick vapor layer are investigated. The matrix element of this transition is about 11 times smaller than… read more here.
Keywords: spectroscopy; vapor layer; transition; doppler free ... See more keywords