Two recently commissioned infrared beamlines on the 1.4 bending magnet port at the Advanced Light Source, LBNL, are described. Using a synchrotron as an IR source provides three primary advantages: increased brightness, very fast light pulses, and enhanced far-IR flux. The considerable brightness advantage manifests itself most beneficially when performing spectroscopy on a microscopic length scale. Beamline (BL) 1.4.3 is a dedicated FTIR spectromicroscopy beamline, where a diffraction-limited spot size using the synchrotron source is utilized. BL 1.4.2 consists of a vacuum FTIR bench with a wide spectral range and step-scan capability. This BL makes use of the pulsed nature of the synchrotron light as well as the far-IR flux. Fast timing is demonstrated by observing the pulses from the electron bunch storage pattern at the ALS. Results from several experiments from both IR beamlines will be presented as an overview of the IR research currently being done at the ALS.
[1]
S. Krinsky,et al.
Millimeter wave coherent synchrotron radiation in the SXLS phase I electron storage ring
,
1994
.
[2]
Howard A. Padmore,et al.
First infrared beamline at the ALS: design, construction, and initial commissioning
,
1997,
Optics & Photonics.
[3]
Tsukuba,et al.
Editorial board
,
2002
.
[4]
Wayne R. McKinney,et al.
Dependence of the fundamental band gap of AlxGa1−xN on alloy composition and pressure
,
1999
.
[5]
R. A. Bosch,et al.
Focusing of infrared edge and synchrotron radiation
,
1999
.