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Inelastic light scattering laboratory

The inelastic light scattering laboratory is devoted to Raman and Brillouin light scattering experiments. The laboratory has three mains setups:


High resolution Raman setup

The high resolution Raman setup is based on a Horiba Jobin-Yvon U1000 spectrometer and it is specificaly optimized for low-frequency measurements on disorderd systems (liquids, glasses, biological materials, ecc.). The main components of the setup are:

  • a Oxxius 532 nm DPSS laser;
  • a Horiba Jobin-Yvon U1000 spectrometer;
  • a low-noise water cooled photomultiplier detector.

Measurements can be done in standard condition or with dedicated sample environment for high and low temperature (from 4 to 1300 K).

Laser wavelength532 nm
Max laser power300 mW
Gratings2 x 1800 lines/mm
Resolution0.15  cm-1
Detector dark counts5 cps
The high-resolution Raman setup
(Photo credits: SDSClab@UniTN)

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Micro-Raman setup

The micro-Raman setup is based on a Horiba Jobin-Yvon Aramis, an integrated confocal microRaman system. The spectrometer is equipped with four diffraction gratings and the detector is an air-cooled CCD. The system has three lasers and a xyz-sample stage for mapping.

Laser wavelength532/633/785 nm
Max Laser power 25/8/20 mW
Gratings300/600/1200/1800 lines/mm
Rejection filtersedge filters
Detector size1024×256 pixels

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Brillouin light scattering setup

The Brillouin light scattering setup allows the study of the acoustic excitations in the GHz regime (i.e. below 1 cm-1) in liquids and disordered systems. The core of the setup is theSoprà DMDP2000 double-pass – double-monochromator spectrometer. This instrument is equipped with a couple of two meter focal length diffraction  gratings  operated at the 11th diffraction order.  The setup is composed by:

  • a Spectra Physics Ar Ion laser;
  • a Soprà double-pass, double-monochromator;
  • a low-noise water cooled photomultiplier detector.

Measurements can be done in standard condition or with dedicated sample environment for high and low temperature (from 4 to 1300 K).

Laser wavelength514 nm
Max laser power2000 mW
Free spectral range2000 cm-1
Resolution0.02 cm-1
Detector dark counts5 cps
The Brillouin light scattering setup
(Photo credits: SDSClab@UniTN)

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