Results 11 to 20 of about 572,572 (292)

A high stability semiconductor laser system for a $^{88}$Sr-based optical lattice clock [PDF]

open access: yes, 2010
We describe a frequency stabilized diode laser at 698 nm used for high resolution spectroscopy of the 1S0-3P0 strontium clock transition. For the laser stabilization we use state-of-the-art symmetrically suspended optical cavities optimized for very low ...
A. Ludlow   +39 more
core   +2 more sources

Laser spectroscopy of iridium monoboride [PDF]

open access: yesThe Journal of Chemical Physics, 2008
High resolution laser induced fluorescence spectrum of IrB in the spectral region between 545 and 610nm has been recorded and analyzed. Reacting laser-ablated iridium atoms with 1% B2H6 seeded in argon produced the IrB molecule. This is the first experimental observation of the IrB molecule.
Pang, HF   +4 more
openaire   +5 more sources

Double face of cytochrome c in cancers by Raman imaging

open access: yesScientific Reports, 2022
Cytochrome c (Cyt c) is a key protein that is needed to maintain life (respiration) and cell death (apoptosis). The dual-function of Cyt c comes from its capability to act as mitochondrial redox carrier that transfers electrons between the membrane ...
H. Abramczyk   +2 more
doaj   +1 more source

A single hollow beam optical trap for cold atoms [PDF]

open access: yes, 2001
We present an optical trap for atoms that we have developed for precision spectroscopy measurements. Cold atoms are captured in a dark region of space inside a blue-detuned hollow laser beam formed by an axicon.
B Peker   +19 more
core   +2 more sources

Investigating Effects of Proteasome Inhibitor on Multiple Myeloma Cells Using Confocal Raman Microscopy

open access: yesSensors, 2016
Due to its label-free and non-destructive nature, applications of Raman spectroscopic imaging in monitoring therapeutic responses at the cellular level are growing.
Jeon Woong Kang   +6 more
doaj   +1 more source

Vacuum space charge effect in laser-based solid-state photoemission spectroscopy

open access: yes, 2010
We report a systematic measurement of the space charge effect observed in the few-ps laser pulse regime in laser-based solid-state photoemission spectroscopy experiments. The broadening and the shift of a gold Fermi edge as a function of spot size, laser
Graf, J.   +8 more
core   +1 more source

Self-mixing interference effects in tunable diode laser absorption spectroscopy [PDF]

open access: yes, 2009
We report the effects of self-mixing interference on gas detection using tunable diode laser spectroscopy. For very weak feedback, the laser diode output intensity gains a sinusoidal modulation analogous to that caused by low finesse etalons in the ...
Hodgkinson, Jane   +3 more
core   +2 more sources

Doppler-free frequency modulation spectroscopy of atomic erbium in a hollow cathode discharge cell

open access: yes, 2011
The erbium atomic system is a promising candidate for an atomic Bose-Einstein condensate of atoms with a non-vanishing orbital angular momentum ($L \neq 0$) of the electronic ground state.
A.S. Bell   +23 more
core   +1 more source

Impedance self-matching ultra-narrow linewidth fiber resonator by use of a tunable π-phase-shifted FBG

open access: yesScientific Reports, 2017
In this paper, we present a novel ultra-narrow linewidth fiber resonator formed by a tunable polarization maintaining (PM) π-phase-shifted fiber Bragg grating and a PM uniform fiber Bragg grating with a certain length of PM single mode fiber patch cable ...
Mingyong Jing   +6 more
doaj   +1 more source

Detection of Single Ion Spectra by Coulomb Crystal Heating

open access: yes, 2010
The coupled motion of ions in a radiofrequency trap has been used to connect the frequency- dependent laser-induced heating of a sympathetically cooled spectroscopy ion with changes in the fluorescence of a laser-cooled control ion.
C. Ricardo Viteri   +6 more
core   +1 more source

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