430 citations · 808 across the 7 of their papers we have counts for
7 papers
Improved Measurement of the Hydrogen 1S - 2S Transition Frequency
Christian G. Parthey, Arthur Matveev, Janis Alnis +14
We have measured the 1S - 2S transition frequency in atomic hydrogen via two photon spectroscopy on a 5.8 K atomic beam. We obtain Hz for t…
Thermal-noise limited laser stabilization to a crystalline whispering-gallery-mode resonator
J. Alnis, A. Schliesser, C. Y. Wang +3
We have stabilized an external cavity diode laser to a whispering gallery mode resonator formed by a protrusion of a single-crystal magnesiumdifluoride cylinder. The cylinder's com…
Sub-Hz line width diode lasers by stabilization to vibrationally and thermally compensated ULE Fabry-Perot cavities
J. Alnis, A. Matveev, N. Kolachevsky +3
We achieved a 0.5 Hz optical beat note line width with ~ 0.1 Hz/s frequency drift at 972 nm between two external cavity diode lasers independently stabilized to two vertically moun…
Compact solid-state laser source for 1S-2S spectroscopy in atomic hydrogen
N. Kolachevsky, J. Alnis, S. D. Bergeson +1
We demonstrate a novel compact solid-state laser source for high-resolution two-photon spectroscopy of the transition in atomic hydrogen. The source emits up to 20 mW at 24…
Sub-Doppler spectroscopy of Rb atoms in a sub-micron vapor cell in the presence of a magnetic field
David Sarkisyan, Aram Papoyan, Tigran Varzhapetyan +3
We report the first use of an extremely thin vapor cell (thickness ~ 400 nm) to study the magnetic-field dependence of laser-induced-fluorescence excitation spectra of alkali atoms…
Reversed Dark Resonance in Rb Atom Excited by a Diode Laser
Janis Alnis, Marcis Auzinsh
Origin of recently discovered reversed (opposite sign) dark resonances was explained theoretically and verified experimentally. It is shown that the reason for these resonances is…