Quasi-Fourier-transform limited, scannable, high energy titanium-sapphire laser source for high resolution spectroscopy

2007 ◽  
Vol 78 (3) ◽  
pp. 033102 ◽  
Author(s):  
Patrick Dupré ◽  
Terry A. Miller
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
High Energy ◽  
Sapphire Laser ◽  
High Resolution Spectroscopy ◽  
Laser Source

scholarly journals Design and laboratory performance of a fiber-fed Fourier transform spectrograph based on off-the-shelf components for astronomical medium and high-resolution spectroscopy

2022 ◽  
Vol 61 (01) ◽  
Author(s):  
Pornapa Artsang ◽  
Christophe Buisset ◽  
Panomsak Meemon ◽  
Pakakaew Rittipruk ◽  
Sirinrat Sithajan ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
High Resolution Spectroscopy ◽  
Laboratory Performance

High-Energy Inelastic-Scattering Beamline for Electron Momentum Density Study

1998 ◽  
Vol 5 (3) ◽  
pp. 208-214 ◽  
Author(s):  
Y. Sakurai
Keyword(s):  
High Resolution ◽  
Inelastic Scattering ◽  
Compton Scattering ◽  
High Energy ◽  
Momentum Density ◽  
High Resolution Spectroscopy ◽  
X Rays ◽  
Circularly Polarized ◽  
Magnetic Structures ◽  
Momentum Resolution

The advent of synchrotron radiation sources for well polarized and high-energy X-rays offers new opportunities for exploiting Compton scattering spectroscopy as a tool for investigating the electronic and magnetic structures of materials. Recent high-resolution Compton scattering experiments show the unique capability for the study of Fermiology-related issues and electron–electron correlation effects. Intense, high-energy and circularly polarized X-ray sources have improved magnetic Compton scattering spectroscopy from the point of statistical accuracy and momentum resolution. As a next advance, a high-energy inelastic scattering beamline dedicated to Compton scattering spectroscopies is being constructed at SPring-8. The light source is an elliptic multipole wiggler with a periodic length of 12 cm. The beamline includes two experimental stations: one is for high-resolution spectroscopy using 100–150 keV X-rays and the other is for magnetic Compton scattering experiments using circularly polarized 300 keV X-rays. The use of such high-energy X-rays makes it possible to carry out experiments efficiently on samples including heavier elements, such as high-T c superconductors and 4f and 5f magnetic materials.

High-resolution spectroscopy of K-shell praseodymium with a high-energy microcalorimeter

2008 ◽  
Vol 86 (1) ◽  
pp. 241-244 ◽  
Author(s):  
D B Thorn ◽  
G V Brown ◽  
J H.T. Clementson ◽  
H Chen ◽  
M Chen ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Resolution ◽  
Ion Trap ◽  
Theoretical Calculations ◽  
High Energy ◽  
High Resolution Spectroscopy ◽  
Transition Energies ◽  
Electron Beam Ion Trap ◽  
Praseodymium Ions ◽  
Measured Transition

We present a measurement of the K-shell spectrum of He-like through Be-like praseodymium ions trapped in the Livermore SuperEBIT electron beam ion trap using a bismuth absorber pixel on the XRS/EBIT microcalorimeter. This measurement is the first of its kind where the n = 2 to n = 1 transitions of the various charge states are spectroscopically resolved. The measured transition energies are compared with theoretical calculations from several atomic codes.PACS Nos.: 32.30.–r, 32.30.Rj, 39.30.+w

Donor identification in bulk GaAs by Fourier transform photoluminescence

1991 ◽  
Vol 69 (3-4) ◽  
pp. 427-431 ◽  
Author(s):  
D. J. S. Beckett ◽  
M. K. Nissen ◽  
M. L. W. Thewalt
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
High Purity ◽  
Chemical Shifts ◽  
High Resolution Spectroscopy ◽  
High Signal ◽  
High Magnetic Fields ◽  
Bulk Gaas ◽  
Donor Identification ◽  
Small Chemical

The identification of substitutional shallow donors in GaAs by optical techniques has been problematic because of the extremely small chemical shifts of these effective-masslike impurities. Photoluminescence has been successfully applied in identifying donors in high-purity epitaxial material through the painstaking use of high-resolution spectroscopy, high-magnetic fields, and resonant excitation. Relatively little work has been done in bulk GaAs, where the broadened transitions hinder the resolution of different species. Recently we demonstrated that the high resolution and high-signal throughput obtained with Fourier transform photoluminescence (FTPL) gives superior results for epitaxial material. In this report we show that the advantages of FTPL can also be applied to reliable donor identification in bulk GaAs.

16O12C17O and 18O12C17O spectroscopy in the 1.2–1.25 μm region

2013 ◽  
Vol 91 (11) ◽  
pp. 963-965 ◽  
Author(s):  
D. Golebiowski ◽  
M. Herman ◽  
O. Lyulin
Keyword(s):  
Carbon Dioxide ◽  
Fourier Transform ◽  
High Resolution ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Spectral Element ◽  
Laser Source ◽  
Enhanced Absorption ◽  
Hot Band ◽  
Infrared Absorption Spectra

Near-infrared absorption spectra of a carbon dioxide sample enriched with oxygen-17 were recorded in the spectral range 1.2–1.25 μm. A high-resolution continuous scan Fourier transform interferometer fitted with a femto OPO/Idler laser source and cavity-enhanced absorption was used. The optimal root mean squared noise equivalent absorption was 1.2 × 10−10 cm−1Hz–1/2 per spectral element, corresponding to αmin = 10−8 cm−1. Two cold bands in 17O12C18O and one hot band in 16O12C17O were newly identified and rotationally analyzed. More lines than previously published (Lyulin et al. J. Quant. Spectrosc. Radiat. Transfer, 113, 2167 (2012)), were assigned in the observed bands of 12C17O2 and 16O12C17O. New upper state rotational constants were obtained from a band-by-band analysis.

Sign in / Sign up

Export Citation Format

Share Document