A5055517757- Spectroscopy and Laser Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum optics and atomic interactions
- Atomic and Molecular Physics
- Atomic and Subatomic Physics Research
- Molecular Junctions and Nanostructures
- Spectroscopy and Quantum Chemical Studies
- Advanced Chemical Physics Studies
- Molecular Spectroscopy and Structure
- Various Chemistry Research Topics
- Advanced Frequency and Time Standards
- Analytical Chemistry and Sensors
- Laser-induced spectroscopy and plasma
- Laser Design and Applications
- Atmospheric and Environmental Gas Dynamics
- Inorganic Fluorides and Related Compounds
- Surface Roughness and Optical Measurements
- Photochemistry and Electron Transfer Studies
- Photoacoustic and Ultrasonic Imaging
- Non-Destructive Testing Techniques
- Laser-Matter Interactions and Applications
- Atmospheric Ozone and Climate
- Gas Sensing Nanomaterials and Sensors
- Electron and X-Ray Spectroscopy Techniques
- Optical and Acousto-Optic Technologies
State University of New York at Oswego
2021-2023
Williams College
2016-2019
California Institute of Technology
2014
Pomona College
2011
University of Oklahoma
2008-2011
Frequency-stabilized cavity ring-down spectroscopy was used to study CO2 lineshapes in the (20013) ← (00001) band centered near 2.06 μm. Two rovibrational transitions were chosen for this measure non-Voigt collisional effects air-broadened lines over pressure range of 7 kPa–28 kPa. Lineshape analysis both revealed evidence simultaneous Dicke (collisional) narrowing and speed-dependent that would introduce biases exceeding 2% retrieved air-broadening parameters if not incorporated modeling...
Pure rotational spectra of the ground electronic-vibrational ${X}_{1}$ state ${}^{204}$Pb${}^{19}$F, ${}^{206}$Pb${}^{19}$F, ${}^{207}$Pb${}^{19}$F, and ${}^{208}$Pb${}^{19}$F are measured with a resonator pulsed supersonic jet Fourier-transform microwave spectrometer. Also reported is new measurement Stark effect on optical $A\ensuremath{\leftarrow}{X}_{1}$ transitions. These combined published high-resolution infrared ${X}_{2}\ensuremath{\leftrightarrow}{X}_{1}$ transitions in order to...
Here we report precision microwave spectroscopy of pure rotational transitions the $^{207}\mathrm{Pb}$$^{19}\mathrm{F}$ isotopologue. We use these data to make predictions sensitivity molecule $P$-odd, $T$-even and $T$-odd effects.
A highly efficient pseudo continuous resonance enhanced multiphoton ionisation detection scheme is presented that combines the sensitivity of (REMPI) with high resolution. This employed to obtain A(v′ = 1) ← X 1(v 0) spectra 208Pb19F a resolution 90 MHz. The observed 19F hyperfine splittings are analysed in terms effective parameters describe interaction between fluorine nuclear spin and unpaired electron 1 states molecule.
We derive an effective Hamiltonian to account for the geometric phase that occurs in adiabatic separation of center-of-mass and internal motion a molecule moving external fields. then apply this determination coherence time molecules confined region space by anisotropic electric field. show is expected scale as load temperature squared milli-K temperatures are likely be required trapped experiment compete with more conventional Ramsey beam resonance experiment.
We present saturation absorption spectroscopy of transitions in Te2 near 444.4 nm. These spectra were taken using a blue diode laser locked to Fabry–Perot (FP) cavity that is turn Zeeman-stabilized helium–neon laser. Tuning the frequency accomplished by N2 pressure tuning FP cavity. The result proportional dispersion index refraction between helium neon and wavelengths. assess stability scanning over single line repeatedly 48 h period. This work motivated our desire produce versatile...
We report measurements of the scalar and tensor static polarizabilities $^{115}\mathrm{In}\phantom{\rule{4pt}{0ex}}7{p}_{1/2}$ $7{p}_{3/2}$ excited states using two-step diode laser spectroscopy in an atomic beam. These are one to two orders magnitude larger than for lower-lying indium due close proximity $7p$ $6d$ states. For polarizabilities, we find values (in units) $1.811(4)\ifmmode\times\else\texttimes\fi{}{10}^{5}\phantom{\rule{4pt}{0ex}}{a}_{0}^{3}$...
We completed a measurement of the Stark shift within $^{115}\mathrm{In}\phantom{\rule{4pt}{0ex}}6{s}_{1/2}\ensuremath{\rightarrow}6{p}_{1/2}$ excited-state transition using two-step laser spectroscopy in an indium atomic beam. By combining this with recent experimental results we determine scalar polarizability ${\ensuremath{\alpha}}_{0}$ $6{p}_{1/2}$ state to be $7683\ifmmode\pm\else\textpm\fi{}43{a}_{0}^{3}$ (in units), result which agrees very well theoretical calculations. In experiment,...
The Saturated Absorption Spectroscopy (SAS) was performed to measure the hyperfine energy splittings of rubidium 5P$_{1/2}$ excited state using a homemade external-cavity diode laser (ECDL) operating at 795 nm. Any nonlinearities associated with ECDL scans were removed by low-expansion confocal Fabry-Perot cavity and hence created linearized frequency axis for spectra collected in fully automated fashion. We report our measurements magnetic dipole coupling constants 120.79(29) 407.75(50)...
We have completed a measurement of the $(6s^26p^2)\, ^3\!P_0 \rightarrow \, ^3\!P_2$ 939 nm electric quadrupole ($E2$) transition amplitude in atomic lead. Using Faraday rotation spectroscopy technique and sensitive polarimeter, we measured this very weak $E2$ for first time, determined its to be $\langle ^3\!P_2 || Q \rangle$ = 8.91(9) a.u.. also present an ab initio theoretical calculation matrix element, which agrees with experiment at 0.5\% level. heat quartz vapor cell containing...
The electric-field-dependent $g$ factor and the electron electric dipole moment (eEDM)-induced Stark splittings for lowest rotational levels of $^{207,208}$PbF are calculated. Observed calculated Zeeman shifts $^{207}$PbF found to be in very good agreement. It is shown that hyperfine sublevels provide a promising system eEDM search related experiments.
There have been many advances in recent years remote sensing and ground-based measurement technologies utilizing optical detection to identify quantify species the atmosphere.Many of these instruments record high signal-to-noise spectra requiring sophisticated spectral modeling beyond Voigt profile.In order properly higher effects, high-resolution laboratory data measuring samples known composition under carefully controlled conditions are required.The oxygen A-band is used a number...
The 53rd Annual Meeting of the APS Division Atomic, Molecular and Optical Physics will take place from May 30 – June 3, 2022 in Orlando, Fl, USA. <a href="https://morressier.zoom.us/j/89880865272?pwd=SWxTRGhra1ZOSDBrSkhVZDBzVDR6UT09/">Virtual Presenter Help Desk</a>
The Saturated Absorption Spectroscopy (SAS) was performed to measure the hyperfine energy splittings of rubidium 5P$_{1/2}$ excited state using a homemade external-cavity diode laser (ECDL) operating at 795 nm. Any nonlinearities associated with ECDL scans were removed by low-expansion confocal Fabry-Perot cavity and hence created linearized frequency axis for spectra collected in fully automated fashion. We report our measurements magnetic dipole coupling constants 120.79(29) 407.75(50)...