Witec Alpha 300R (WITEC-RAMAN)


Witec Alpha 300R

Guarantor:
Zdeněk Spotz, Ph.D.

Instrument status:
Some Issues Some Issues, 21.10.2024 14:50, 532nm laser low power

Equipment placement:
CEITEC Nano - C1.23


The WITec confocal Raman imaging system alpha300 R offers exceptional performance in speed, sensitivity, and resolution. It allows the generation of maps with the information of the complete Raman spectrum at every image pixel with a resolution down to the optical diffraction limit. Our system has 3 lasers covering NUV and VIS domains, 3 independent spectrometers also extend to NIR spectral range.


Publications:

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Photogallery

Specification

Basic Microscope Features:

Research grade optical microscope with objectives:

  • 10x (NA 0.25, WD 9.3mm)
  • 50x (NA 0.8, WD 0.58 mm)
  • 100x (NA 0.9, WD 0.31 mm)
  • 40x (NA 0.6, WD 3.6 to 2.8 mm) for Raman UV applications

Resolution:

  • ~200 nm laterally (depending on the objective and wavelength)

Motorized stage travelling range:

  • 25 x 25 mm in X, Y
  • 30 mm in Z

Step size:

  • 100 nm in X, Y
  • 10 nm in Z

Sample size: 120 mm in x- and y-direction, 25 mm in height

Automated confocal Raman imaging (maximum 25 x 25 mm²)

Ultrafast Raman imaging (1300 spectra per second) optional available


Raman Operation Modes:

  • Raman spectral imaging
  • 3D confocal Raman imaging
  • Time and power series
  • Single point Raman spectrum acquisition
  • Single-point depth profiling
  • Confocal Fluorescence Microscopy
  • Bright Field Microscopy

Excitation Lasers:



Ultrahigh-throughput UHTS Spectrometers:

  • Various lens-based, 3 spectrometers optimized for UV, VIS or NIR ranges available, all specifically designed for Raman microscopy and applications with low light intensities
  • The excitation laser light and the scattered light is guided between laser sources, microscope and spectrometers by optical fibers (efficiency of the transmission is up to 70 %)



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