Mid-IR - Mid Infrared Spectromicroscopy

Mid-IR provides a state-of-the-art Fourier Transform IR spectrometer and microscope to supply diffraction-limited spatial resolution to an ever-widening range of experimental configurations. Research and development will explore new experiments and re-examine existing techniques by applying the advantages of high brightness infrared synchrotron light.

Spectral Range

560 - 6000 cm-1



  • ATR Infrared Spectroscopy
  • Grazing Incidence Infrared Spectroscopy (by special request)
  • Photoacoustic Infrared Spectroscopy
  • Infrared Polarization Modulation Spectroscopy (VCD/VLD)

Imaging & Microscopy

  • Chemical Infrared Imaging
  • ATR Infrared Chemical Imaging (by special request)


The Mid-IR beamline is ideal for studying biomedical and biological materials, agricultural and environmental samples, materials such as polymers, art specimens, and much more!

Supported sample mounts for transmission include:

A) holder for two 25 mm CaF2 windows
B) Liquid cell, uses 25 mm CaF2 windows
C) Holder for one 25 mm CaF2 window
D) Holder for four 10 mm CaF2 windows

MidIR inked sample holders


CLS Port 01B1-1
Source Bending Magnet
Typical spot sizes Diffraction Limited
Maximum Photon Flux 1014 @ 10 μm
Resolution 16.0 – 0.125 cm-1


Scott Rosendahl Scientist, Beamline Responsible (Mid-IR)

Visit the Mid-IR website for a full list of beamline contacts.

Full Contact List

Beamline Video


Purchased Access

Purchased access offers quick and accurate solutions to proprietary questions. CLS scientists develop an experimental plan based on the client’s needs, and conduct all data collection and analysis, resulting in a detailed report with key answers to critical questions.

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Peer-Reviewed Access

Academic clients can submit proposals through a peer review process. Beam time is granted based on scientific merit, with the expectation that any results will be published. In special cases, rapid access is also available for instrument or beam time.

Proposal Submission