Using an iodine-stabilized He-Ne laser as a transfer oscillator, we compare absolute measurements of the optical frequency from a traditional frequency synthesis chain based on harmonic generation and from the frequency division technique of an ultrawide bandwidth femtosecond frequency comb. The agreement between these two measurements, both linked to the Cs standard, is 220+/-770 Hz, yielding ...

In a recent experiment [2], Uiberacker et al. exposed neon atoms to a phase-stabilized fewcycle infrared (IR) laser field and a synchronized attosecond XUV pulse. The XUV pulse leads to single ionization of the Ne atom and the creation of excited (shake-up) states in the residual Ne ion. The IR pulse can then further ionize the Ne ion, thus serving as a probe for the quantum state of the singly...

OBJECTIVE The aim of this study was to evaluate the analgesic effect of the low level laser therapy (LLLT) with a He-Ne laser on acute inflammatory pain, verifying the contribution of the peripheral opioid receptors and the action of LLLT on the hyperalgesia produced by the release of hyperalgesic mediators of inflammation. BACKGROUND DATA All analgesic drugs have undesired effects. Because o...

Time-dependent density functional theory (TDDFT) is employed to study the interaction of a Ne atom with short and strong 800\,nm laser pulses. In the intensity regime covered (10;14-10;16 W/cm;2) up to triply ionized Ne is observed. Good quantitative agreement with the experimental Ne;+ ion-yield (and the Ne;2+ -yield near saturation) is obtained. Nonsequential ionization (NSI) leads to a stron...

An attosecond pump-probe scheme that combines the use of a free-electron laser pulse with an ultrashort pulse is applied in order to explore the ultrafast excitation dynamics in Ne. We describe the multielectron dynamics using a new nonperturbative time-dependent R-matrix theory. This theory enables the interaction of ultrashort light fields with multielectron atoms and atomic ions to be determ...

We determined the effects of helium-neon (He-Ne) laser irradiation on wound healing dynamics in mice treated with steroidal and non-steroidal anti-inflammatory agents. Male albino mice, 28-32 g, were randomized into 6 groups of 6 animals each: control (C), He-Ne laser (L), dexamethasone (D), D + L, celecoxib (X), and X + L. D and X were injected im at doses of 5 and 22 mg/kg, respectively, 24 h...

Operating conditions for a tunable XeCl excimer laser have been optimized for tunable narrow-band operation at 222 nm with KrCl, formed in Kr/He/Ne/HCl gas mixtures. This wavelength is interesting for detection of nitric oxide (NO) in combustion environments. The laser emission coincides with the (1, 1) and (2, 2) bands of the NO A-X system. Laser-induced-fluorescence spectra taken in a flame s...

The phase noise of the f-to-2f interferometer used for stabilizing the carrier-envelope phase of a femtosecond laser oscillator was studied by adding a He-Ne laser beam co-propagating with the short pulse laser beam. The noise was reduced to ~60 mrad by stabilizing the optical path length difference of the interferometer. This suppressed the fast jitter of the carrier-envelope phase of the ampl...

Zahn, Sebastian, Stefan Leis, Christoph Schick, Martin Schmelz, and Frank Birklein. No -adrenoreceptor-induced C-fiber activation in healthy human skin. J Appl Physiol 96: 1380–1384, 2004. First published December 12, 2003; 10.1152/japplphysiol.00990.2003.—In healthy volunteers, flare responses induced by norepinephrine (NE) iontophoresis have been observed. However, as NE iontophoresis is a co...

Introduction: We present noble gas data from the metallic glass (BMG) [1] flown on Genesis [2]. This target sampled the bulk solar wind (SW) at all velocities during the entire 887 days collection period of Genesis. The main motivation for selecting the BMG has been to look for the putative solar energetic particle (SEP) component reported to be present in lunar and asteroidal regolith samples ...